21225933267 has 32 divisors (see below), whose sum is σ = 35414974464. Its totient is φ = 10985738400.

The previous prime is 21225933233. The next prime is 21225933347. The reversal of 21225933267 is 76233952212.

It is a happy number.

It is not a de Polignac number, because 21225933267 - 2⁷ = 21225933139 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21225933217) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 106933 + ... + 232134.

It is an arithmetic number, because the mean of its divisors is an integer number (1106717952).

Almost surely, 2^21225933267 is an apocalyptic number.

21225933267 is a deficient number, since it is larger than the sum of its proper divisors (14189041197).

21225933267 is a wasteful number, since it uses less digits than its factorization.

21225933267 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 339359.

The product of its digits is 272160, while the sum is 42.

The spelling of 21225933267 in words is "twenty-one billion, two hundred twenty-five million, nine hundred thirty-three thousand, two hundred sixty-seven".