21223102125023 has 2 divisors, whose sum is σ = 21223102125024. Its totient is φ = 21223102125022.

The previous prime is 21223102124993. The next prime is 21223102125067. The reversal of 21223102125023 is 32052120132212.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21223102125023 - 2²⁸ = 21222833689567 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21223102124983 and 21223102125001.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21223102125623) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10611551062511 + 10611551062512.

It is an arithmetic number, because the mean of its divisors is an integer number (10611551062512).

Almost surely, 2^{21223102125023} is an apocalyptic number.

21223102125023 is a deficient number, since it is larger than the sum of its proper divisors (1).

21223102125023 is an equidigital number, since it uses as much as digits as its factorization.

21223102125023 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2880, while the sum is 26.

Adding to 21223102125023 its reverse (32052120132212), we get a palindrome (53275222257235).

The spelling of 21223102125023 in words is "twenty-one trillion, two hundred twenty-three billion, one hundred two million, one hundred twenty-five thousand, twenty-three".