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2112113101 = 72227189887
BaseRepresentation
bin111110111100100…
…0100100111001101
312110012022110111011
41331321010213031
513311200104401
6545325525221
7103224444100
oct17571044715
95405273434
102112113101
1199426191a
124ab413811
1327876c487
14160720737
15c565b451
hex7de449cd

2112113101 has 12 divisors (see below), whose sum is σ = 2467784448. Its totient is φ = 1802397912.

The previous prime is 2112113083. The next prime is 2112113137. The reversal of 2112113101 is 1013112112.

It is a happy number.

It is not a de Polignac number, because 2112113101 - 27 = 2112112973 is a prime.

It is a super-2 number, since 2×21121131012 = 8922043502831672402, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2112117101) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 83821 + ... + 106066.

It is an arithmetic number, because the mean of its divisors is an integer number (205648704).

Almost surely, 22112113101 is an apocalyptic number.

It is an amenable number.

2112113101 is a deficient number, since it is larger than the sum of its proper divisors (355671347).

2112113101 is a wasteful number, since it uses less digits than its factorization.

2112113101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 190128 (or 190121 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 13.

The square root of 2112113101 is about 45957.7316781409. The cubic root of 2112113101 is about 1283.0366340731.

Adding to 2112113101 its reverse (1013112112), we get a palindrome (3125225213).

The spelling of 2112113101 in words is "two billion, one hundred twelve million, one hundred thirteen thousand, one hundred one".

Divisors: 1 7 49 227 1589 11123 189887 1329209 9304463 43104349 301730443 2112113101