121154153200 has 60 divisors (see below), whose sum is σ = 291299557768. Its totient is φ = 48423916800.

The previous prime is 121154153173. The next prime is 121154153203. The reversal of 121154153200 is 2351451121.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121154153203) by changing a digit.

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 in 11 ways as a sum of consecutive naturals, for example, 399094 + ... + 633706.

Almost surely, 2^121154153200 is an apocalyptic number.

121154153200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121154153200 is an abundant number, since it is smaller than the sum of its proper divisors (170145404568).

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

121154153200 is a wasteful number, since it uses less digits than its factorization.

121154153200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 235922 (or 235911 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 25.

The spelling of 121154153200 in words is "one hundred twenty-one billion, one hundred fifty-four million, one hundred fifty-three thousand, two hundred".