22131236653 has 2 divisors, whose sum is σ = 22131236654. Its totient is φ = 22131236652.

The previous prime is 22131236623. The next prime is 22131236657. The reversal of 22131236653 is 35663213122.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17380994569 + 4750242084 = 131837^2 + 68922^2 .

It is a cyclic number.

It is not a de Polignac number, because 22131236653 - 2²⁵ = 22097682221 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22131236657) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11065618326 + 11065618327.

It is an arithmetic number, because the mean of its divisors is an integer number (11065618327).

Almost surely, 2^22131236653 is an apocalyptic number.

It is an amenable number.

22131236653 is a deficient number, since it is larger than the sum of its proper divisors (1).

22131236653 is an equidigital number, since it uses as much as digits as its factorization.

22131236653 is an evil number, because the sum of its binary digits is even.

The product of its digits is 38880, while the sum is 34.

Adding to 22131236653 its reverse (35663213122), we get a palindrome (57794449775).

The spelling of 22131236653 in words is "twenty-two billion, one hundred thirty-one million, two hundred thirty-six thousand, six hundred fifty-three".