22634525642221 has 2 divisors, whose sum is σ = 22634525642222. Its totient is φ = 22634525642220.

The previous prime is 22634525642129. The next prime is 22634525642251. The reversal of 22634525642221 is 12224652543622.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21555025422121 + 1079500220100 = 4642739^2 + 1038990^2 .

It is a cyclic number.

It is not a de Polignac number, because 22634525642221 - 2¹⁷ = 22634525511149 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22634525642251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11317262821110 + 11317262821111.

It is an arithmetic number, because the mean of its divisors is an integer number (11317262821111).

Almost surely, 2^{22634525642221} is an apocalyptic number.

It is an amenable number.

22634525642221 is a deficient number, since it is larger than the sum of its proper divisors (1).

22634525642221 is an equidigital number, since it uses as much as digits as its factorization.

22634525642221 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2764800, while the sum is 46.

The spelling of 22634525642221 in words is "twenty-two trillion, six hundred thirty-four billion, five hundred twenty-five million, six hundred forty-two thousand, two hundred twenty-one".