21023222103 has 12 divisors (see below), whose sum is σ = 32702790120. Its totient is φ = 12937367376.

The previous prime is 21023222083. The next prime is 21023222113. The reversal of 21023222103 is 30122232012.

21023222103 is a `hidden beast` number, since 210 + 232 + 221 + 0 + 3 = 666.

It is not a de Polignac number, because 21023222103 - 2⁵ = 21023222071 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21023222113) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 89842713 + ... + 89842946.

It is an arithmetic number, because the mean of its divisors is an integer number (2725232510).

Almost surely, 2^21023222103 is an apocalyptic number.

21023222103 is a deficient number, since it is larger than the sum of its proper divisors (11679568017).

21023222103 is a wasteful number, since it uses less digits than its factorization.

21023222103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 179685678 (or 179685675 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 21023222103 its reverse (30122232012), we get a palindrome (51145454115).

Subtracting 21023222103 from its reverse (30122232012), we obtain a palindrome (9099009909).

The spelling of 21023222103 in words is "twenty-one billion, twenty-three million, two hundred twenty-two thousand, one hundred three".