21022103023 has 2 divisors, whose sum is σ = 21022103024. Its totient is φ = 21022103022.

The previous prime is 21022103021. The next prime is 21022103033. The reversal of 21022103023 is 32030122012.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21022103023 - 2¹ = 21022103021 is a prime.

Together with 21022103021, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 21022102988 and 21022103006.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21022103021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10511051511 + 10511051512.

It is an arithmetic number, because the mean of its divisors is an integer number (10511051512).

Almost surely, 2^21022103023 is an apocalyptic number.

21022103023 is a deficient number, since it is larger than the sum of its proper divisors (1).

21022103023 is an equidigital number, since it uses as much as digits as its factorization.

21022103023 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 16.

Adding to 21022103023 its reverse (32030122012), we get a palindrome (53052225035).

The spelling of 21022103023 in words is "twenty-one billion, twenty-two million, one hundred three thousand, twenty-three".