1111111110972 has 72 divisors (see below), whose sum is σ = 2974441762656. Its totient is φ = 348515241984.

The previous prime is 1111111110971. The next prime is 1111111111049. The reversal of 1111111110972 is 2790111111111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1111111110971) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2977473 + ... + 3329799.

It is an arithmetic number, because the mean of its divisors is an integer number (41311691148).

Almost surely, 2^{1111111110972} is an apocalyptic number.

1111111110972 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1111111110972 is an abundant number, since it is smaller than the sum of its proper divisors (1863330651684).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1111111110972 is a wasteful number, since it uses less digits than its factorization.

1111111110972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 357507 (or 357502 counting only the distinct ones).

The product of its (nonzero) digits is 126, while the sum is 27.

The spelling of 1111111110972 in words is "one trillion, one hundred eleven billion, one hundred eleven million, one hundred ten thousand, nine hundred seventy-two".