121256110060120 has 64 divisors (see below), whose sum is σ = 328212027244800. Its totient is φ = 39385443265920.

The previous prime is 121256110060091. The next prime is 121256110060219. The reversal of 121256110060120 is 21060011652121.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11396245626 + ... + 11396256265.

It is an arithmetic number, because the mean of its divisors is an integer number (5128312925700).

Almost surely, 2^{121256110060120} is an apocalyptic number.

121256110060120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121256110060120 is an abundant number, since it is smaller than the sum of its proper divisors (206955917184680).

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

121256110060120 is a wasteful number, since it uses less digits than its factorization.

121256110060120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22792501928 (or 22792501924 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 28.

The spelling of 121256110060120 in words is "one hundred twenty-one trillion, two hundred fifty-six billion, one hundred ten million, sixty thousand, one hundred twenty".