22311232330021 has 2 divisors, whose sum is σ = 22311232330022. Its totient is φ = 22311232330020.

The previous prime is 22311232330019. The next prime is 22311232330027. The reversal of 22311232330021 is 12003323211322.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 21695613201025 + 615619128996 = 4657855^2 + 784614^2 .

It is a cyclic number.

It is not a de Polignac number, because 22311232330021 - 2¹ = 22311232330019 is a prime.

It is a super-3 number, since 3×22311232330021³ (a number of 41 digits) contains 333 as substring.

Together with 22311232330019, 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 (22311232330027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11155616165010 + 11155616165011.

It is an arithmetic number, because the mean of its divisors is an integer number (11155616165011).

Almost surely, 2^{22311232330021} is an apocalyptic number.

It is an amenable number.

22311232330021 is a deficient number, since it is larger than the sum of its proper divisors (1).

22311232330021 is an equidigital number, since it uses as much as digits as its factorization.

22311232330021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2592, while the sum is 25.

Adding to 22311232330021 its reverse (12003323211322), we get a palindrome (34314555541343).

The spelling of 22311232330021 in words is "twenty-two trillion, three hundred eleven billion, two hundred thirty-two million, three hundred thirty thousand, twenty-one".