1021002112112 has 20 divisors (see below), whose sum is σ = 1988441295600. Its totient is φ = 507855971328.

The previous prime is 1021002112087. The next prime is 1021002112139. The reversal of 1021002112112 is 2112112001201.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 165314612 + ... + 165320787.

It is an arithmetic number, because the mean of its divisors is an integer number (99422064780).

Almost surely, 2^{1021002112112} is an apocalyptic number.

It is an amenable number.

1021002112112 is a deficient number, since it is larger than the sum of its proper divisors (967439183488).

1021002112112 is a wasteful number, since it uses less digits than its factorization.

1021002112112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 330635600 (or 330635594 counting only the distinct ones).

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

Adding to 1021002112112 its reverse (2112112001201), we get a palindrome (3133114113313).

The spelling of 1021002112112 in words is "one trillion, twenty-one billion, two million, one hundred twelve thousand, one hundred twelve".