120206572021 has 2 divisors, whose sum is σ = 120206572022. Its totient is φ = 120206572020.

The previous prime is 120206571997. The next prime is 120206572039. The reversal of 120206572021 is 120275602021.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 83067886225 + 37138685796 = 288215^2 + 192714^2 .

It is a cyclic number.

It is not a de Polignac number, because 120206572021 - 2²¹ = 120204474869 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (120206572921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60103286010 + 60103286011.

It is an arithmetic number, because the mean of its divisors is an integer number (60103286011).

Almost surely, 2^120206572021 is an apocalyptic number.

It is an amenable number.

120206572021 is a deficient number, since it is larger than the sum of its proper divisors (1).

120206572021 is an equidigital number, since it uses as much as digits as its factorization.

120206572021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3360, while the sum is 28.

The spelling of 120206572021 in words is "one hundred twenty billion, two hundred six million, five hundred seventy-two thousand, twenty-one".