1012112156 has 24 divisors (see below), whose sum is σ = 1977153024. Its totient is φ = 449351280.

The previous prime is 1012112141. The next prime is 1012112173. The reversal of 1012112156 is 6512112101.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 265580 + ... + 269363.

It is an arithmetic number, because the mean of its divisors is an integer number (82381376).

Almost surely, 2^1012112156 is an apocalyptic number.

It is an amenable number.

1012112156 is a deficient number, since it is larger than the sum of its proper divisors (965040868).

1012112156 is a wasteful number, since it uses less digits than its factorization.

1012112156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 535001 (or 534999 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 20.

The square root of 1012112156 is about 31813.7101891622. The cubic root of 1012112156 is about 1004.0211936606.

Adding to 1012112156 its reverse (6512112101), we get a palindrome (7524224257).

Subtracting 1012112156 from its reverse (6512112101), we obtain a palindrome (5499999945).

The spelling of 1012112156 in words is "one billion, twelve million, one hundred twelve thousand, one hundred fifty-six".