20910572201 has 2 divisors, whose sum is σ = 20910572202. Its totient is φ = 20910572200.

The previous prime is 20910572129. The next prime is 20910572213. The reversal of 20910572201 is 10227501902.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10673989225 + 10236582976 = 103315^2 + 101176^2 .

It is a cyclic number.

It is not a de Polignac number, because 20910572201 - 2²⁶ = 20843463337 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (20910572251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10455286100 + 10455286101.

It is an arithmetic number, because the mean of its divisors is an integer number (10455286101).

Almost surely, 2^20910572201 is an apocalyptic number.

It is an amenable number.

20910572201 is a deficient number, since it is larger than the sum of its proper divisors (1).

20910572201 is an equidigital number, since it uses as much as digits as its factorization.

20910572201 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2520, while the sum is 29.

The spelling of 20910572201 in words is "twenty billion, nine hundred ten million, five hundred seventy-two thousand, two hundred one".