2101122112 has 28 divisors (see below), whose sum is σ = 4172525056. Its totient is φ = 1049777280.

The previous prime is 2101122097. The next prime is 2101122137. The reversal of 2101122112 is 2112211012.

It is a junction number, because it is equal to n+sod(n) for n = 2101122092 and 2101122101.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 79537 + ... + 102607.

It is an arithmetic number, because the mean of its divisors is an integer number (149018752).

Almost surely, 2^2101122112 is an apocalyptic number.

It is an amenable number.

2101122112 is a deficient number, since it is larger than the sum of its proper divisors (2071402944).

2101122112 is a wasteful number, since it uses less digits than its factorization.

2101122112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24506 (or 24496 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

The square root of 2101122112 is about 45837.9985601466. The cubic root of 2101122112 is about 1280.8072121913.

Adding to 2101122112 its reverse (2112211012), we get a palindrome (4213333124).

Subtracting 2101122112 from its reverse (2112211012), we obtain a square (11088900 = 3330²).

The spelling of 2101122112 in words is "two billion, one hundred one million, one hundred twenty-two thousand, one hundred twelve".