1012020021992 has 32 divisors (see below), whose sum is σ = 2175587406720. Its totient is φ = 432328251840.

The previous prime is 1012020021967. The next prime is 1012020022033. The reversal of 1012020021992 is 2991200202101.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29036903 + ... + 29071734.

It is an arithmetic number, because the mean of its divisors is an integer number (67987106460).

Almost surely, 2^{1012020021992} is an apocalyptic number.

It is an amenable number.

1012020021992 is an abundant number, since it is smaller than the sum of its proper divisors (1163567384728).

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

1012020021992 is a wasteful number, since it uses less digits than its factorization.

1012020021992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58108961 (or 58108957 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 29.

The spelling of 1012020021992 in words is "one trillion, twelve billion, twenty million, twenty-one thousand, nine hundred ninety-two".