2100123112 has 8 divisors (see below), whose sum is σ = 3937730850. Its totient is φ = 1050061552.

The previous prime is 2100123097. The next prime is 2100123211. The reversal of 2100123112 is 2113210012.

It can be written as a sum of positive squares in only one way, i.e., 1748410596 + 351712516 = 41814^2 + 18754^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 2100123092 and 2100123101.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 131257687 + ... + 131257702.

Almost surely, 2^2100123112 is an apocalyptic number.

It is an amenable number.

2100123112 is a deficient number, since it is larger than the sum of its proper divisors (1837607738).

2100123112 is a wasteful number, since it uses less digits than its factorization.

2100123112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 262515395 (or 262515391 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 2100123112 is about 45827.1001919170. The cubic root of 2100123112 is about 1280.6041890480.

Adding to 2100123112 its reverse (2113210012), we get a palindrome (4213333124).

The spelling of 2100123112 in words is "two billion, one hundred million, one hundred twenty-three thousand, one hundred twelve".