121339885120 has 28 divisors (see below), whose sum is σ = 288940602204. Its totient is φ = 48535953920.

The previous prime is 121339885097. The next prime is 121339885123. The reversal of 121339885120 is 21588933121.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 64768214016 + 56571671104 = 254496^2 + 237848^2 .

It is not an unprimeable number, because it can be changed into a prime (121339885123) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 189593251 + ... + 189593890.

Almost surely, 2^121339885120 is an apocalyptic number.

121339885120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121339885120 is an abundant number, since it is smaller than the sum of its proper divisors (167600717084).

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

121339885120 is an equidigital number, since it uses as much as digits as its factorization.

121339885120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 379187158 (or 379187148 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 43.

The spelling of 121339885120 in words is "one hundred twenty-one billion, three hundred thirty-nine million, eight hundred eighty-five thousand, one hundred twenty".