22231511202001 has 2 divisors, whose sum is σ = 22231511202002. Its totient is φ = 22231511202000.

The previous prime is 22231511201987. The next prime is 22231511202059. The reversal of 22231511202001 is 10020211513222.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 21324778751376 + 906732450625 = 4617876^2 + 952225^2 .

It is a cyclic number.

It is not a de Polignac number, because 22231511202001 - 2²⁷ = 22231376984273 is a prime.

It is not a weakly prime, because it can be changed into another prime (22231511202101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11115755601000 + 11115755601001.

It is an arithmetic number, because the mean of its divisors is an integer number (11115755601001).

Almost surely, 2^{22231511202001} is an apocalyptic number.

It is an amenable number.

22231511202001 is a deficient number, since it is larger than the sum of its proper divisors (1).

22231511202001 is an equidigital number, since it uses as much as digits as its factorization.

22231511202001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 480, while the sum is 22.

Adding to 22231511202001 its reverse (10020211513222), we get a palindrome (32251722715223).

The spelling of 22231511202001 in words is "twenty-two trillion, two hundred thirty-one billion, five hundred eleven million, two hundred two thousand, one".