121312120132 has 24 divisors (see below), whose sum is σ = 255393938240. Its totient is φ = 49254544800.

The previous prime is 121312120129. The next prime is 121312120157. The reversal of 121312120132 is 231021213121.

It is a Harshad number since it is a multiple of its sum of digits (19).

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, 114014619 + ... + 114015682.

Almost surely, 2^121312120132 is an apocalyptic number.

It is an amenable number.

121312120132 is an abundant number, since it is smaller than the sum of its proper divisors (134081818108).

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

121312120132 is a wasteful number, since it uses less digits than its factorization.

121312120132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 228030331 (or 228030329 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 121312120132 its reverse (231021213121), we get a palindrome (352333333253).

The spelling of 121312120132 in words is "one hundred twenty-one billion, three hundred twelve million, one hundred twenty thousand, one hundred thirty-two".