121320578933 has 2 divisors, whose sum is σ = 121320578934. Its totient is φ = 121320578932.

The previous prime is 121320578893. The next prime is 121320578957. The reversal of 121320578933 is 339875023121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 69127978084 + 52192600849 = 262922^2 + 228457^2 .

It is a cyclic number.

It is not a de Polignac number, because 121320578933 - 2²⁰ = 121319530357 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121320778933) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60660289466 + 60660289467.

It is an arithmetic number, because the mean of its divisors is an integer number (60660289467).

Almost surely, 2^121320578933 is an apocalyptic number.

It is an amenable number.

121320578933 is a deficient number, since it is larger than the sum of its proper divisors (1).

121320578933 is an equidigital number, since it uses as much as digits as its factorization.

121320578933 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 272160, while the sum is 44.

The spelling of 121320578933 in words is "one hundred twenty-one billion, three hundred twenty million, five hundred seventy-eight thousand, nine hundred thirty-three".