23333402221 has 2 divisors, whose sum is σ = 23333402222. Its totient is φ = 23333402220.

The previous prime is 23333402203. The next prime is 23333402263. The reversal of 23333402221 is 12220433332.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22822144900 + 511257321 = 151070^2 + 22611^2 .

It is a cyclic number.

It is not a de Polignac number, because 23333402221 - 2¹⁷ = 23333271149 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23333402021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11666701110 + 11666701111.

It is an arithmetic number, because the mean of its divisors is an integer number (11666701111).

Almost surely, 2^23333402221 is an apocalyptic number.

It is an amenable number.

23333402221 is a deficient number, since it is larger than the sum of its proper divisors (1).

23333402221 is an equidigital number, since it uses as much as digits as its factorization.

23333402221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5184, while the sum is 25.

Adding to 23333402221 its reverse (12220433332), we get a palindrome (35553835553).

The spelling of 23333402221 in words is "twenty-three billion, three hundred thirty-three million, four hundred two thousand, two hundred twenty-one".