121516520052 has 12 divisors (see below), whose sum is σ = 283538546816. Its totient is φ = 40505506680.

The previous prime is 121516520029. The next prime is 121516520063. The reversal of 121516520052 is 250025615121.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5063188324 + ... + 5063188347.

Almost surely, 2^121516520052 is an apocalyptic number.

121516520052 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

121516520052 is an abundant number, since it is smaller than the sum of its proper divisors (162022026764).

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

121516520052 is a wasteful number, since it uses less digits than its factorization.

121516520052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10126376678 (or 10126376676 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 30.

The spelling of 121516520052 in words is "one hundred twenty-one billion, five hundred sixteen million, five hundred twenty thousand, fifty-two".