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2111112201 = 3112310127539
BaseRepresentation
bin111110111010101…
…0000010000001001
312110010102121111210
41331311100100021
513310421042301
6545252243333
7103213105032
oct17565202011
95403377453
102111112201
11993738930
124ab010549
132784aba23
1416053da89
15c550ead6
hex7dd50409

2111112201 has 32 divisors (see below), whose sum is σ = 3236060160. Its totient is φ = 1211672000.

The previous prime is 2111112191. The next prime is 2111112229. The reversal of 2111112201 is 1022111112.

It is not a de Polignac number, because 2111112201 - 221 = 2109015049 is a prime.

It is a super-2 number, since 2×21111122012 = 8913589450422128802, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2111112001) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 62890 + ... + 90428.

It is an arithmetic number, because the mean of its divisors is an integer number (101126880).

Almost surely, 22111112201 is an apocalyptic number.

It is an amenable number.

2111112201 is a deficient number, since it is larger than the sum of its proper divisors (1124947959).

2111112201 is a wasteful number, since it uses less digits than its factorization.

2111112201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27677.

The product of its (nonzero) digits is 8, while the sum is 12.

The square root of 2111112201 is about 45946.8410339601. The cubic root of 2111112201 is about 1282.8339311855.

Adding to 2111112201 its reverse (1022111112), we get a palindrome (3133223313).

It can be divided in two parts, 211111 and 2201, that added together give a palindrome (213312).

The spelling of 2111112201 in words is "two billion, one hundred eleven million, one hundred twelve thousand, two hundred one".

Divisors: 1 3 11 23 33 69 101 253 303 759 1111 2323 3333 6969 25553 27539 76659 82617 302929 633397 908787 1900191 2781439 6967367 8344317 20902101 30595829 63973097 91787487 191919291 703704067 2111112201