121551112235452 has 24 divisors (see below), whose sum is σ = 214145333614800. Its totient is φ = 60366743673600.

The previous prime is 121551112235429. The next prime is 121551112235533. The reversal of 121551112235452 is 254532211155121.

It is a congruent number.

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, 38317828 + ... + 41368564.

It is an arithmetic number, because the mean of its divisors is an integer number (8922722233950).

Almost surely, 2^{121551112235452} is an apocalyptic number.

It is an amenable number.

121551112235452 is a deficient number, since it is larger than the sum of its proper divisors (92594221379348).

121551112235452 is a wasteful number, since it uses less digits than its factorization.

121551112235452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3117741 (or 3117739 counting only the distinct ones).

The product of its digits is 120000, while the sum is 40.

The spelling of 121551112235452 in words is "one hundred twenty-one trillion, five hundred fifty-one billion, one hundred twelve million, two hundred thirty-five thousand, four hundred fifty-two".