121743270621 has 80 divisors (see below), whose sum is σ = 218938368000. Its totient is φ = 65859352992.

The previous prime is 121743270601. The next prime is 121743270643. The reversal of 121743270621 is 126072347121.

121743270621 is a `hidden beast` number, since 1 + 2 + 1 + 7 + 4 + 3 + 27 + 0 + 621 = 666.

It is not a de Polignac number, because 121743270621 - 2⁶ = 121743270557 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121743270601) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 19636080 + ... + 19642278.

It is an arithmetic number, because the mean of its divisors is an integer number (2736729600).

Almost surely, 2^121743270621 is an apocalyptic number.

It is an amenable number.

121743270621 is a deficient number, since it is larger than the sum of its proper divisors (97195097379).

121743270621 is a wasteful number, since it uses less digits than its factorization.

121743270621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8060 (or 8051 counting only the distinct ones).

The product of its (nonzero) digits is 28224, while the sum is 36.

The spelling of 121743270621 in words is "one hundred twenty-one billion, seven hundred forty-three million, two hundred seventy thousand, six hundred twenty-one".