121755373973 has 2 divisors, whose sum is σ = 121755373974. Its totient is φ = 121755373972.

The previous prime is 121755373939. The next prime is 121755374021. The reversal of 121755373973 is 379373557121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 118760876689 + 2994497284 = 344617^2 + 54722^2 .

It is a cyclic number.

It is not a de Polignac number, because 121755373973 - 2¹⁴ = 121755357589 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121755373903) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60877686986 + 60877686987.

It is an arithmetic number, because the mean of its divisors is an integer number (60877686987).

Almost surely, 2^121755373973 is an apocalyptic number.

It is an amenable number.

121755373973 is a deficient number, since it is larger than the sum of its proper divisors (1).

121755373973 is an equidigital number, since it uses as much as digits as its factorization.

121755373973 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4167450, while the sum is 53.

The spelling of 121755373973 in words is "one hundred twenty-one billion, seven hundred fifty-five million, three hundred seventy-three thousand, nine hundred seventy-three".