23021022197 has 2 divisors, whose sum is σ = 23021022198. Its totient is φ = 23021022196.

The previous prime is 23021022181. The next prime is 23021022239. The reversal of 23021022197 is 79122012032.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18510690916 + 4510331281 = 136054^2 + 67159^2 .

It is a cyclic number.

It is not a de Polignac number, because 23021022197 - 2⁴ = 23021022181 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23021022137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11510511098 + 11510511099.

It is an arithmetic number, because the mean of its divisors is an integer number (11510511099).

Almost surely, 2^23021022197 is an apocalyptic number.

It is an amenable number.

23021022197 is a deficient number, since it is larger than the sum of its proper divisors (1).

23021022197 is an equidigital number, since it uses as much as digits as its factorization.

23021022197 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3024, while the sum is 29.

The spelling of 23021022197 in words is "twenty-three billion, twenty-one million, twenty-two thousand, one hundred ninety-seven".