121451555452 has 6 divisors (see below), whose sum is σ = 212540222048. Its totient is φ = 60725777724.

The previous prime is 121451555447. The next prime is 121451555521. The reversal of 121451555452 is 254555154121.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15181444428 + ... + 15181444435.

Almost surely, 2^121451555452 is an apocalyptic number.

It is an amenable number.

121451555452 is a deficient number, since it is larger than the sum of its proper divisors (91088666596).

121451555452 is a wasteful number, since it uses less digits than its factorization.

121451555452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30362888867 (or 30362888865 counting only the distinct ones).

The product of its digits is 200000, while the sum is 40.

The spelling of 121451555452 in words is "one hundred twenty-one billion, four hundred fifty-one million, five hundred fifty-five thousand, four hundred fifty-two".