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112012100020 = 22517329447353
BaseRepresentation
bin110100001010001110…
…0010000000110110100
3101201010022112020201001
41220110130100012310
53313400044200040
6123242504013044
711043523066162
oct1502434200664
9351108466631
10112012100020
114355aa01697
1219860761184
13a74131c932
1455c850c232
152da8a9a59a
hex1a147101b4

112012100020 has 24 divisors (see below), whose sum is σ = 249062199624. Its totient is φ = 42169261056.

The previous prime is 112012099987. The next prime is 112012100021. The reversal of 112012100020 is 20001210211.

It can be written as a sum of positive squares in 4 ways, for example, as 35546577444 + 76465522576 = 188538^2 + 276524^2 .

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (112012100021) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 164723337 + ... + 164724016.

It is an arithmetic number, because the mean of its divisors is an integer number (10377591651).

Almost surely, 2112012100020 is an apocalyptic number.

112012100020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

112012100020 is an abundant number, since it is smaller than the sum of its proper divisors (137050099604).

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

112012100020 is a wasteful number, since it uses less digits than its factorization.

112012100020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 329447379 (or 329447377 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 112012100020 its reverse (20001210211), we get a palindrome (132013310231).

The spelling of 112012100020 in words is "one hundred twelve billion, twelve million, one hundred thousand, twenty".

Divisors: 1 2 4 5 10 17 20 34 68 85 170 340 329447353 658894706 1317789412 1647236765 3294473530 5600605001 6588947060 11201210002 22402420004 28003025005 56006050010 112012100020