1221610980512 has 24 divisors (see below), whose sum is σ = 2590050204756. Its totient is φ = 563820452352.

The previous prime is 1221610980481. The next prime is 1221610980521. The reversal of 1221610980512 is 2150890161221.

It can be written as a sum of positive squares in 2 ways, for example, as 1220662586896 + 948393616 = 1104836^2 + 30796^2 .

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, 1468282013 + ... + 1468282844.

Almost surely, 2^{1221610980512} is an apocalyptic number.

It is an amenable number.

1221610980512 is an abundant number, since it is smaller than the sum of its proper divisors (1368439224244).

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

1221610980512 is a wasteful number, since it uses less digits than its factorization.

1221610980512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2936564880 (or 2936564872 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 38.

The spelling of 1221610980512 in words is "one trillion, two hundred twenty-one billion, six hundred ten million, nine hundred eighty thousand, five hundred twelve".