1021120012112 has 20 divisors (see below), whose sum is σ = 1993998137856. Its totient is φ = 506539847520.

The previous prime is 1021120012111. The next prime is 1021120012147. The reversal of 1021120012112 is 2112100211201.

It is a super-2 number, since 2×1021120012112² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1021120012111) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 251257814 + ... + 251261877.

Almost surely, 2^{1021120012112} is an apocalyptic number.

It is an amenable number.

1021120012112 is a deficient number, since it is larger than the sum of its proper divisors (972878125744).

1021120012112 is a wasteful number, since it uses less digits than its factorization.

1021120012112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 502519826 (or 502519820 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 1021120012112 its reverse (2112100211201), we get a palindrome (3133220223313).

The spelling of 1021120012112 in words is "one trillion, twenty-one billion, one hundred twenty million, twelve thousand, one hundred twelve".