22100012197 has 2 divisors, whose sum is σ = 22100012198. Its totient is φ = 22100012196.

The previous prime is 22100012183. The next prime is 22100012287. The reversal of 22100012197 is 79121000122.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14200535556 + 7899476641 = 119166^2 + 88879^2 .

It is a cyclic number.

It is not a de Polignac number, because 22100012197 - 2⁷ = 22100012069 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22100010197) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11050006098 + 11050006099.

It is an arithmetic number, because the mean of its divisors is an integer number (11050006099).

Almost surely, 2^22100012197 is an apocalyptic number.

It is an amenable number.

22100012197 is a deficient number, since it is larger than the sum of its proper divisors (1).

22100012197 is an equidigital number, since it uses as much as digits as its factorization.

22100012197 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 504, while the sum is 25.

The spelling of 22100012197 in words is "twenty-two billion, one hundred million, twelve thousand, one hundred ninety-seven".