121021255450530 has 32 divisors (see below), whose sum is σ = 322723347868800. Its totient is φ = 32272334786736.

The previous prime is 121021255450523. The next prime is 121021255450541. The reversal of 121021255450530 is 35054552120121.

121021255450530 is a `hidden beast` number, since 1 + 2 + 1 + 0 + 2 + 1 + 2 + 554 + 50 + 53 + 0 = 666.

It is a super-2 number, since 2×121021255450530² (a number of 29 digits) contains 22 as substring.

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, 224113435750 + ... + 224113436289.

It is an arithmetic number, because the mean of its divisors is an integer number (10085104620900).

Almost surely, 2^{121021255450530} is an apocalyptic number.

121021255450530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121021255450530 is an abundant number, since it is smaller than the sum of its proper divisors (201702092418270).

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

121021255450530 is a wasteful number, since it uses less digits than its factorization.

121021255450530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 448226872055 (or 448226872049 counting only the distinct ones).

The product of its (nonzero) digits is 60000, while the sum is 36.

The spelling of 121021255450530 in words is "one hundred twenty-one trillion, twenty-one billion, two hundred fifty-five million, four hundred fifty thousand, five hundred thirty".