1229376216972 has 24 divisors (see below), whose sum is σ = 2875358162992. Its totient is φ = 408818692800.

The previous prime is 1229376216949. The next prime is 1229376217009. The reversal of 1229376216972 is 2796126739221.

It is a super-2 number, since 2×1229376216972² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 121667179 + ... + 121677282.

Almost surely, 2^{1229376216972} is an apocalyptic number.

1229376216972 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1229376216972 is an abundant number, since it is smaller than the sum of its proper divisors (1645981946020).

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

1229376216972 is a wasteful number, since it uses less digits than its factorization.

1229376216972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 243344889 (or 243344887 counting only the distinct ones).

The product of its digits is 6858432, while the sum is 57.

The spelling of 1229376216972 in words is "one trillion, two hundred twenty-nine billion, three hundred seventy-six million, two hundred sixteen thousand, nine hundred seventy-two".