121185054072 has 64 divisors (see below), whose sum is σ = 348232932000. Its totient is φ = 39002084352.

The previous prime is 121185054059. The next prime is 121185054127. The reversal of 121185054072 is 270450581121.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (36).

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 in 15 ways as a sum of consecutive naturals, for example, 9666873 + ... + 9679400.

Almost surely, 2^121185054072 is an apocalyptic number.

121185054072 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

121185054072 is an abundant number, since it is smaller than the sum of its proper divisors (227047877928).

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

121185054072 is a wasteful number, since it uses less digits than its factorization.

121185054072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19346317 (or 19346307 counting only the distinct ones).

The product of its (nonzero) digits is 22400, while the sum is 36.

The spelling of 121185054072 in words is "one hundred twenty-one billion, one hundred eighty-five million, fifty-four thousand, seventy-two".