121203152252154 has 24 divisors (see below), whose sum is σ = 300122091291360. Its totient is φ = 34629472072008.

The previous prime is 121203152252137. The next prime is 121203152252173. The reversal of 121203152252154 is 451252251302121.

121203152252154 is a `hidden beast` number, since 1 + 2 + 1 + 2 + 0 + 31 + 52 + 2 + 521 + 54 = 666.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 480964889764 + ... + 480964890015.

It is an arithmetic number, because the mean of its divisors is an integer number (12505087137140).

Almost surely, 2^{121203152252154} is an apocalyptic number.

121203152252154 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

121203152252154 is an abundant number, since it is smaller than the sum of its proper divisors (178918939039206).

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

121203152252154 is a wasteful number, since it uses less digits than its factorization.

121203152252154 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 961929779794 (or 961929779791 counting only the distinct ones).

The product of its (nonzero) digits is 48000, while the sum is 36.

The spelling of 121203152252154 in words is "one hundred twenty-one trillion, two hundred three billion, one hundred fifty-two million, two hundred fifty-two thousand, one hundred fifty-four".