21223514223 has 12 divisors (see below), whose sum is σ = 31113743128. Its totient is φ = 13937829840.

The previous prime is 21223514177. The next prime is 21223514231. The reversal of 21223514223 is 32241532212.

21223514223 is a `hidden beast` number, since 2 + 1 + 2 + 235 + 1 + 422 + 3 = 666.

It is not a de Polignac number, because 21223514223 - 2¹⁸ = 21223252079 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21223514423) 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, 17597668 + ... + 17598873.

Almost surely, 2^21223514223 is an apocalyptic number.

21223514223 is a deficient number, since it is larger than the sum of its proper divisors (9890228905).

21223514223 is a wasteful number, since it uses less digits than its factorization.

21223514223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35196614 (or 35196611 counting only the distinct ones).

The product of its digits is 5760, while the sum is 27.

The spelling of 21223514223 in words is "twenty-one billion, two hundred twenty-three million, five hundred fourteen thousand, two hundred twenty-three".