121820942293512 has 128 divisors (see below), whose sum is σ = 379704916684800. Its totient is φ = 31641529996800.

The previous prime is 121820942293469. The next prime is 121820942293627. The reversal of 121820942293512 is 215392249028121.

It is a super-3 number, since 3×121820942293512³ (a number of 43 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 298874812 + ... + 299282132.

It is an arithmetic number, because the mean of its divisors is an integer number (2966444661600).

Almost surely, 2^{121820942293512} is an apocalyptic number.

121820942293512 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

121820942293512 is an abundant number, since it is smaller than the sum of its proper divisors (257883974391288).

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

121820942293512 is a wasteful number, since it uses less digits than its factorization.

121820942293512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 569187 (or 569183 counting only the distinct ones).

The product of its (nonzero) digits is 1244160, while the sum is 51.

The spelling of 121820942293512 in words is "one hundred twenty-one trillion, eight hundred twenty billion, nine hundred forty-two million, two hundred ninety-three thousand, five hundred twelve".