1200120081280 has 32 divisors (see below), whose sum is σ = 2869037070840. Its totient is φ = 480048032256.

The previous prime is 1200120081269. The next prime is 1200120081311. The reversal of 1200120081280 is 821800210021.

It is a tau number, because it is divible by the number of its divisors (32).

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, 937593174 + ... + 937594453.

Almost surely, 2^{1200120081280} is an apocalyptic number.

1200120081280 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1200120081280 is an abundant number, since it is smaller than the sum of its proper divisors (1668916989560).

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

1200120081280 is an equidigital number, since it uses as much as digits as its factorization.

1200120081280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1875187646 (or 1875187634 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 25.

The spelling of 1200120081280 in words is "one trillion, two hundred billion, one hundred twenty million, eighty-one thousand, two hundred eighty".