121793201980 has 24 divisors (see below), whose sum is σ = 257090943312. Its totient is φ = 48464858112.

The previous prime is 121793201963. The next prime is 121793201989. The reversal of 121793201980 is 89102397121.

It is a super-3 number, since 3×121793201980³ (a number of 34 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121793201989) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15772462 + ... + 15780181.

It is an arithmetic number, because the mean of its divisors is an integer number (10712122638).

Almost surely, 2^121793201980 is an apocalyptic number.

121793201980 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121793201980 is an abundant number, since it is smaller than the sum of its proper divisors (135297741332).

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

121793201980 is a wasteful number, since it uses less digits than its factorization.

121793201980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31552845 (or 31552843 counting only the distinct ones).

The product of its (nonzero) digits is 54432, while the sum is 43.

The spelling of 121793201980 in words is "one hundred twenty-one billion, seven hundred ninety-three million, two hundred one thousand, nine hundred eighty".