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111221112112 = 24112029311453
BaseRepresentation
bin110011110010101001…
…0110111110100110000
3101122002012010220021121
41213211102313310300
53310240101041422
6123032210232024
711015106566035
oct1474522676460
9348065126247
10111221112112
1143194466780
121967b885614
13a6464a3a56
14555144b38c
152d5e4038c7
hex19e54b7d30

111221112112 has 40 divisors (see below), whose sum is σ = 235197602640. Its totient is φ = 50529972480.

The previous prime is 111221112043. The next prime is 111221112131. The reversal of 111221112112 is 211211122111.

111221112112 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a nude number because it is divisible by every one of its digits and also a Zuckerman number because it is divisible by the product of its digits.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 201378 + ... + 512830.

It is an arithmetic number, because the mean of its divisors is an integer number (5879940066).

Almost surely, 2111221112112 is an apocalyptic number.

It is an amenable number.

111221112112 is an abundant number, since it is smaller than the sum of its proper divisors (123976490528).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

111221112112 is a wasteful number, since it uses less digits than its factorization.

111221112112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 313501 (or 313495 counting only the distinct ones).

The product of its digits is 16, while the sum is 16.

Adding to 111221112112 its reverse (211211122111), we get a palindrome (322432234223).

Subtracting 111221112112 from its reverse (211211122111), we obtain a palindrome (99990009999).

It can be divided in two parts, 11122111 and 2112, that multiplied together give a palindrome (23489898432).

The spelling of 111221112112 in words is "one hundred eleven billion, two hundred twenty-one million, one hundred twelve thousand, one hundred twelve".

Divisors: 1 2 4 8 11 16 22 44 88 176 2029 4058 8116 16232 22319 32464 44638 89276 178552 311453 357104 622906 1245812 2491624 3425983 4983248 6851966 13703932 27407864 54815728 631938137 1263876274 2527752548 5055505096 6951319507 10111010192 13902639014 27805278028 55610556056 111221112112