22231233202021 has 2 divisors, whose sum is σ = 22231233202022. Its totient is φ = 22231233202020.

The previous prime is 22231233202019. The next prime is 22231233202027. The reversal of 22231233202021 is 12020233213222.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16989029150625 + 5242204051396 = 4121775^2 + 2289586^2 .

It is a cyclic number.

It is not a de Polignac number, because 22231233202021 - 2¹ = 22231233202019 is a prime.

Together with 22231233202019, 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 (22231233202027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11115616601010 + 11115616601011.

It is an arithmetic number, because the mean of its divisors is an integer number (11115616601011).

Almost surely, 2^{22231233202021} is an apocalyptic number.

It is an amenable number.

22231233202021 is a deficient number, since it is larger than the sum of its proper divisors (1).

22231233202021 is an equidigital number, since it uses as much as digits as its factorization.

22231233202021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3456, while the sum is 25.

Adding to 22231233202021 its reverse (12020233213222), we get a palindrome (34251466415243).

The spelling of 22231233202021 in words is "twenty-two trillion, two hundred thirty-one billion, two hundred thirty-three million, two hundred two thousand, twenty-one".