22102232261 has 2 divisors, whose sum is σ = 22102232262. Its totient is φ = 22102232260.

The previous prime is 22102232209. The next prime is 22102232263. The reversal of 22102232261 is 16223220122.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14705200225 + 7397032036 = 121265^2 + 86006^2 .

It is a cyclic number.

It is not a de Polignac number, because 22102232261 - 2³⁴ = 4922363077 is a prime.

Together with 22102232263, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22102232263) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11051116130 + 11051116131.

It is an arithmetic number, because the mean of its divisors is an integer number (11051116131).

Almost surely, 2^22102232261 is an apocalyptic number.

It is an amenable number.

22102232261 is a deficient number, since it is larger than the sum of its proper divisors (1).

22102232261 is an equidigital number, since it uses as much as digits as its factorization.

22102232261 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 22102232261 its reverse (16223220122), we get a palindrome (38325452383).

The spelling of 22102232261 in words is "twenty-two billion, one hundred two million, two hundred thirty-two thousand, two hundred sixty-one".