23025211021 has 2 divisors, whose sum is σ = 23025211022. Its totient is φ = 23025211020.

The previous prime is 23025211019. The next prime is 23025211057. The reversal of 23025211021 is 12011252032.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17734248900 + 5290962121 = 133170^2 + 72739^2 .

It is a cyclic number.

It is not a de Polignac number, because 23025211021 - 2¹ = 23025211019 is a prime.

Together with 23025211019, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 23025211021.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23025211061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11512605510 + 11512605511.

It is an arithmetic number, because the mean of its divisors is an integer number (11512605511).

Almost surely, 2^23025211021 is an apocalyptic number.

It is an amenable number.

23025211021 is a deficient number, since it is larger than the sum of its proper divisors (1).

23025211021 is an equidigital number, since it uses as much as digits as its factorization.

23025211021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 240, while the sum is 19.

Adding to 23025211021 its reverse (12011252032), we get a palindrome (35036463053).

The spelling of 23025211021 in words is "twenty-three billion, twenty-five million, two hundred eleven thousand, twenty-one".