120021562601 has 2 divisors, whose sum is σ = 120021562602. Its totient is φ = 120021562600.

The previous prime is 120021562543. The next prime is 120021562621. The reversal of 120021562601 is 106265120021.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 114294705625 + 5726856976 = 338075^2 + 75676^2 .

It is a cyclic number.

It is not a de Polignac number, because 120021562601 - 2³⁴ = 102841693417 is a prime.

It is not a weakly prime, because it can be changed into another prime (120021562621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60010781300 + 60010781301.

It is an arithmetic number, because the mean of its divisors is an integer number (60010781301).

Almost surely, 2^120021562601 is an apocalyptic number.

It is an amenable number.

120021562601 is a deficient number, since it is larger than the sum of its proper divisors (1).

120021562601 is an equidigital number, since it uses as much as digits as its factorization.

120021562601 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1440, while the sum is 26.

Adding to 120021562601 its reverse (106265120021), we get a palindrome (226286682622).

The spelling of 120021562601 in words is "one hundred twenty billion, twenty-one million, five hundred sixty-two thousand, six hundred one".