20002295221 has 2 divisors, whose sum is σ = 20002295222. Its totient is φ = 20002295220.

The previous prime is 20002295197. The next prime is 20002295263. The reversal of 20002295221 is 12259220002.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17552540196 + 2449755025 = 132486^2 + 49495^2 .

It is a cyclic number.

It is not a de Polignac number, because 20002295221 - 2⁵ = 20002295189 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20002295281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10001147610 + 10001147611.

It is an arithmetic number, because the mean of its divisors is an integer number (10001147611).

Almost surely, 2^20002295221 is an apocalyptic number.

It is an amenable number.

20002295221 is a deficient number, since it is larger than the sum of its proper divisors (1).

20002295221 is an equidigital number, since it uses as much as digits as its factorization.

20002295221 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 25.

The spelling of 20002295221 in words is "twenty billion, two million, two hundred ninety-five thousand, two hundred twenty-one".