1012112109 has 12 divisors (see below), whose sum is σ = 1462514976. Its totient is φ = 674475912.

The previous prime is 1012112099. The next prime is 1012112141. The reversal of 1012112109 is 9012112101.

It is a happy number.

It is not a de Polignac number, because 1012112109 - 2¹⁶ = 1012046573 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1012112091 and 1012112100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1012112809) 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, 3592 + ... + 45134.

It is an arithmetic number, because the mean of its divisors is an integer number (121876248).

Almost surely, 2^1012112109 is an apocalyptic number.

It is an amenable number.

1012112109 is a deficient number, since it is larger than the sum of its proper divisors (450402867).

1012112109 is a wasteful number, since it uses less digits than its factorization.

1012112109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44256 (or 44253 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 18.

The square root of 1012112109 is about 31813.7094504869. The cubic root of 1012112109 is about 1004.0211781192.

The spelling of 1012112109 in words is "one billion, twelve million, one hundred twelve thousand, one hundred nine".