121802956579920 has 240 divisors, whose sum is σ = 479166956227008. Its totient is φ = 25309705236480.

The previous prime is 121802956579903. The next prime is 121802956579937. The reversal of 121802956579920 is 29975659208121.

It is an interprime number because it is at equal distance from previous prime (121802956579903) and next prime (121802956579937).

It is a tau number, because it is divible by the number of its divisors (240).

It is a Harshad number since it is a multiple of its sum of digits (66).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 470661289 + ... + 470920008.

Almost surely, 2^{121802956579920} is an apocalyptic number.

121802956579920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121802956579920 is an abundant number, since it is smaller than the sum of its proper divisors (357363999647088).

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

121802956579920 is a wasteful number, since it uses less digits than its factorization.

121802956579920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 941581338 (or 941581325 counting only the distinct ones).

The product of its (nonzero) digits is 48988800, while the sum is 66.

The spelling of 121802956579920 in words is "one hundred twenty-one trillion, eight hundred two billion, nine hundred fifty-six million, five hundred seventy-nine thousand, nine hundred twenty".