1320121576992 has 48 divisors (see below), whose sum is σ = 3615985195200. Its totient is φ = 420908328192.

The previous prime is 1320121576979. The next prime is 1320121577023. The reversal of 1320121576992 is 2996751210231.

It is a tau number, because it is divible by the number of its divisors (48).

It is a Harshad number since it is a multiple of its sum of digits (48).

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, 298938367 + ... + 298942782.

It is an arithmetic number, because the mean of its divisors is an integer number (75333024900).

Almost surely, 2^{1320121576992} is an apocalyptic number.

1320121576992 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1320121576992 is an abundant number, since it is smaller than the sum of its proper divisors (2295863618208).

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

1320121576992 is a wasteful number, since it uses less digits than its factorization.

1320121576992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 597881185 (or 597881177 counting only the distinct ones).

The product of its (nonzero) digits is 408240, while the sum is 48.

The spelling of 1320121576992 in words is "one trillion, three hundred twenty billion, one hundred twenty-one million, five hundred seventy-six thousand, nine hundred ninety-two".