22201323197 has 2 divisors, whose sum is σ = 22201323198. Its totient is φ = 22201323196.

The previous prime is 22201323191. The next prime is 22201323269. The reversal of 22201323197 is 79132310222.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14606897881 + 7594425316 = 120859^2 + 87146^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22201323197 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22201323191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11100661598 + 11100661599.

It is an arithmetic number, because the mean of its divisors is an integer number (11100661599).

Almost surely, 2^22201323197 is an apocalyptic number.

It is an amenable number.

22201323197 is a deficient number, since it is larger than the sum of its proper divisors (1).

22201323197 is an equidigital number, since it uses as much as digits as its factorization.

22201323197 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9072, while the sum is 32.

The spelling of 22201323197 in words is "twenty-two billion, two hundred one million, three hundred twenty-three thousand, one hundred ninety-seven".