23002332421 has 2 divisors, whose sum is σ = 23002332422. Its totient is φ = 23002332420.

The previous prime is 23002332403. The next prime is 23002332427. The reversal of 23002332421 is 12423320032.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15309112900 + 7693219521 = 123730^2 + 87711^2 .

It is a cyclic number.

It is not a de Polignac number, because 23002332421 - 2¹⁷ = 23002201349 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 23002332392 and 23002332401.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23002332427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11501166210 + 11501166211.

It is an arithmetic number, because the mean of its divisors is an integer number (11501166211).

Almost surely, 2^23002332421 is an apocalyptic number.

It is an amenable number.

23002332421 is a deficient number, since it is larger than the sum of its proper divisors (1).

23002332421 is an equidigital number, since it uses as much as digits as its factorization.

23002332421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1728, while the sum is 22.

Adding to 23002332421 its reverse (12423320032), we get a palindrome (35425652453).

The spelling of 23002332421 in words is "twenty-three billion, two million, three hundred thirty-two thousand, four hundred twenty-one".