22963021 has 2 divisors, whose sum is σ = 22963022. Its totient is φ = 22963020.

The previous prime is 22963019. The next prime is 22963027. The reversal of 22963021 is 12036922.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19900521 + 3062500 = 4461^2 + 1750^2 .

It is a cyclic number.

It is not a de Polignac number, because 22963021 - 2¹ = 22963019 is a prime.

Together with 22963019, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22963027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11481510 + 11481511.

It is an arithmetic number, because the mean of its divisors is an integer number (11481511).

Almost surely, 2^22963021 is an apocalyptic number.

It is an amenable number.

22963021 is a deficient number, since it is larger than the sum of its proper divisors (1).

22963021 is an equidigital number, since it uses as much as digits as its factorization.

22963021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1296, while the sum is 25.

The square root of 22963021 is about 4791.9746451750. The cubic root of 22963021 is about 284.2342055687.

Adding to 22963021 its reverse (12036922), we get a palindrome (34999943).

The spelling of 22963021 in words is "twenty-two million, nine hundred sixty-three thousand, twenty-one".