121531225412 has 12 divisors (see below), whose sum is σ = 212687093136. Its totient is φ = 60763484520.

The previous prime is 121531225367. The next prime is 121531225423. The reversal of 121531225412 is 214522135121.

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, 399914 + ... + 634817.

It is an arithmetic number, because the mean of its divisors is an integer number (17723924428).

Almost surely, 2^121531225412 is an apocalyptic number.

It is an amenable number.

121531225412 is a deficient number, since it is larger than the sum of its proper divisors (91155867724).

121531225412 is a wasteful number, since it uses less digits than its factorization.

121531225412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1064098 (or 1064096 counting only the distinct ones).

The product of its digits is 4800, while the sum is 29.

The spelling of 121531225412 in words is "one hundred twenty-one billion, five hundred thirty-one million, two hundred twenty-five thousand, four hundred twelve".