21222303023 has 6 divisors (see below), whose sum is σ = 22398054264. Its totient is φ = 20105339364.

The previous prime is 21222303019. The next prime is 21222303043. The reversal of 21222303023 is 32030322212.

It is not a de Polignac number, because 21222303023 - 2² = 21222303019 is a prime.

It is a super-2 number, since 2×21222303023² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21222302986 and 21222303004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21222303043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 29393411 + ... + 29394132.

It is an arithmetic number, because the mean of its divisors is an integer number (3733009044).

Almost surely, 2^21222303023 is an apocalyptic number.

21222303023 is a deficient number, since it is larger than the sum of its proper divisors (1175751241).

21222303023 is an equidigital number, since it uses as much as digits as its factorization.

21222303023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58787581 (or 58787562 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 20.

Adding to 21222303023 its reverse (32030322212), we get a palindrome (53252625235).

The spelling of 21222303023 in words is "twenty-one billion, two hundred twenty-two million, three hundred three thousand, twenty-three".