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2112113211 = 31359979463
BaseRepresentation
bin111110111100100…
…0100101000111011
312110012022110122020
41331321010220323
513311200110321
6545325525523
7103224444315
oct17571045073
95405273566
102112113211
11994261a0a
124ab4138a3
1327876c540
141607207b5
15c565b4c6
hex7de44a3b

2112113211 has 32 divisors (see below), whose sum is σ = 3116305920. Its totient is φ = 1264425984.

The previous prime is 2112113209. The next prime is 2112113249. The reversal of 2112113211 is 1123112112.

It is not a de Polignac number, because 2112113211 - 21 = 2112113209 is a prime.

It is a super-2 number, since 2×21121132112 = 8922044432161461042, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2112113281) 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, 218466 + ... + 227928.

It is an arithmetic number, because the mean of its divisors is an integer number (97384560).

Almost surely, 22112113211 is an apocalyptic number.

2112113211 is a deficient number, since it is larger than the sum of its proper divisors (1004192709).

2112113211 is a wasteful number, since it uses less digits than its factorization.

2112113211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9635.

The product of its digits is 24, while the sum is 15.

The square root of 2112113211 is about 45957.7328748928. The cubic root of 2112113211 is about 1283.0366563469.

Adding to 2112113211 its reverse (1123112112), we get a palindrome (3235225323).

The spelling of 2112113211 in words is "two billion, one hundred twelve million, one hundred thirteen thousand, two hundred eleven".

Divisors: 1 3 13 39 59 97 177 291 767 1261 2301 3783 5723 9463 17169 28389 74399 123019 223197 369057 558317 917911 1674951 2753733 7258121 11932843 21774363 35798529 54156749 162470247 704037737 2112113211