21022112021023 has 2 divisors, whose sum is σ = 21022112021024. Its totient is φ = 21022112021022.

The previous prime is 21022112021021. The next prime is 21022112021117. The reversal of 21022112021023 is 32012021122012.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21022112021023 - 2¹ = 21022112021021 is a prime.

Together with 21022112021021, 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 (21022112021021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10511056010511 + 10511056010512.

It is an arithmetic number, because the mean of its divisors is an integer number (10511056010512).

Almost surely, 2^{21022112021023} is an apocalyptic number.

21022112021023 is a deficient number, since it is larger than the sum of its proper divisors (1).

21022112021023 is an equidigital number, since it uses as much as digits as its factorization.

21022112021023 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 21022112021023 its reverse (32012021122012), we get a palindrome (53034133143035).

The spelling of 21022112021023 in words is "twenty-one trillion, twenty-two billion, one hundred twelve million, twenty-one thousand, twenty-three".