121311020012 has 48 divisors (see below), whose sum is σ = 261335273472. Its totient is φ = 47981989440.

The previous prime is 121311020003. The next prime is 121311020021. The reversal of 121311020012 is 210020113121.

121311020012 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (121311020003) and next prime (121311020021).

It is a Harshad number since it is a multiple of its sum of digits (14).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2061437 + ... + 2119467.

It is an arithmetic number, because the mean of its divisors is an integer number (5444484864).

Almost surely, 2^121311020012 is an apocalyptic number.

It is an amenable number.

121311020012 is an abundant number, since it is smaller than the sum of its proper divisors (140024253460).

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

121311020012 is a wasteful number, since it uses less digits than its factorization.

121311020012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63798 (or 63796 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 14.

Adding to 121311020012 its reverse (210020113121), we get a palindrome (331331133133).

The spelling of 121311020012 in words is "one hundred twenty-one billion, three hundred eleven million, twenty thousand, twelve".