22523000321 has 2 divisors, whose sum is σ = 22523000322. Its totient is φ = 22523000320.

The previous prime is 22523000299. The next prime is 22523000327. The reversal of 22523000321 is 12300032522.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13792153600 + 8730846721 = 117440^2 + 93439^2 .

It is a cyclic number.

It is not a de Polignac number, because 22523000321 - 2²⁶ = 22455891457 is a prime.

It is a super-2 number, since 2×22523000321² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 22523000293 and 22523000302.

It is not a weakly prime, because it can be changed into another prime (22523000327) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11261500160 + 11261500161.

It is an arithmetic number, because the mean of its divisors is an integer number (11261500161).

Almost surely, 2^22523000321 is an apocalyptic number.

It is an amenable number.

22523000321 is a deficient number, since it is larger than the sum of its proper divisors (1).

22523000321 is an equidigital number, since it uses as much as digits as its factorization.

22523000321 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 720, while the sum is 20.

Adding to 22523000321 its reverse (12300032522), we get a palindrome (34823032843).

The spelling of 22523000321 in words is "twenty-two billion, five hundred twenty-three million, three hundred twenty-one", and thus it is an aban number.