1210021979132 has 12 divisors (see below), whose sum is σ = 2117578258320. Its totient is φ = 604999619616.

The previous prime is 1210021979123. The next prime is 1210021979147. The reversal of 1210021979132 is 2319791200121.

It is a happy number.

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, 2600753 + ... + 3030504.

It is an arithmetic number, because the mean of its divisors is an integer number (176464854860).

Almost surely, 2^{1210021979132} is an apocalyptic number.

It is an amenable number.

1210021979132 is a deficient number, since it is larger than the sum of its proper divisors (907556279188).

1210021979132 is a wasteful number, since it uses less digits than its factorization.

1210021979132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5684980 (or 5684978 counting only the distinct ones).

The product of its (nonzero) digits is 13608, while the sum is 38.

The spelling of 1210021979132 in words is "one trillion, two hundred ten billion, twenty-one million, nine hundred seventy-nine thousand, one hundred thirty-two".