120097649921 has 2 divisors, whose sum is σ = 120097649922. Its totient is φ = 120097649920.

The previous prime is 120097649839. The next prime is 120097649939. The reversal of 120097649921 is 129946790021.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 113909625025 + 6188024896 = 337505^2 + 78664^2 .

It is a cyclic number.

It is not a de Polignac number, because 120097649921 - 2²² = 120093455617 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 120097649921.

It is not a weakly prime, because it can be changed into another prime (120097649621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60048824960 + 60048824961.

It is an arithmetic number, because the mean of its divisors is an integer number (60048824961).

Almost surely, 2^120097649921 is an apocalyptic number.

It is an amenable number.

120097649921 is a deficient number, since it is larger than the sum of its proper divisors (1).

120097649921 is an equidigital number, since it uses as much as digits as its factorization.

120097649921 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 489888, while the sum is 50.

The spelling of 120097649921 in words is "one hundred twenty billion, ninety-seven million, six hundred forty-nine thousand, nine hundred twenty-one".