121331302120 has 32 divisors (see below), whose sum is σ = 311994777600. Its totient is φ = 41599303488.

The previous prime is 121331302013. The next prime is 121331302139. The reversal of 121331302120 is 21203133121.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 216662760 + ... + 216663319.

It is an arithmetic number, because the mean of its divisors is an integer number (9749836800).

Almost surely, 2^121331302120 is an apocalyptic number.

121331302120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121331302120 is an abundant number, since it is smaller than the sum of its proper divisors (190663475480).

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

121331302120 is a wasteful number, since it uses less digits than its factorization.

121331302120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 433326097 (or 433326093 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 121331302120 its reverse (21203133121), we get a palindrome (142534435241).

The spelling of 121331302120 in words is "one hundred twenty-one billion, three hundred thirty-one million, three hundred two thousand, one hundred twenty".