121795864620 has 24 divisors (see below), whose sum is σ = 341028421104. Its totient is φ = 32478897216.

The previous prime is 121795864613. The next prime is 121795864621. The reversal of 121795864620 is 26468597121.

It is not an unprimeable number, because it can be changed into a prime (121795864621) 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, 1014965479 + ... + 1014965598.

It is an arithmetic number, because the mean of its divisors is an integer number (14209517546).

Almost surely, 2^121795864620 is an apocalyptic number.

121795864620 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121795864620 is an abundant number, since it is smaller than the sum of its proper divisors (219232556484).

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

121795864620 is a wasteful number, since it uses less digits than its factorization.

121795864620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2029931089 (or 2029931087 counting only the distinct ones).

The product of its (nonzero) digits is 1451520, while the sum is 51.

The spelling of 121795864620 in words is "one hundred twenty-one billion, seven hundred ninety-five million, eight hundred sixty-four thousand, six hundred twenty".