236221422197 has 2 divisors, whose sum is σ = 236221422198. Its totient is φ = 236221422196.

The previous prime is 236221422193. The next prime is 236221422211. The reversal of 236221422197 is 791224122632.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 228980433361 + 7240988836 = 478519^2 + 85094^2 .

It is a cyclic number.

It is not a de Polignac number, because 236221422197 - 2² = 236221422193 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (236221422193) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 118110711098 + 118110711099.

It is an arithmetic number, because the mean of its divisors is an integer number (118110711099).

Almost surely, 2^236221422197 is an apocalyptic number.

It is an amenable number.

236221422197 is a deficient number, since it is larger than the sum of its proper divisors (1).

236221422197 is an equidigital number, since it uses as much as digits as its factorization.

236221422197 is an evil number, because the sum of its binary digits is even.

The product of its digits is 145152, while the sum is 41.

The spelling of 236221422197 in words is "two hundred thirty-six billion, two hundred twenty-one million, four hundred twenty-two thousand, one hundred ninety-seven".