21233221299 has 12 divisors (see below), whose sum is σ = 30672626712. Its totient is φ = 14154364800.

The previous prime is 21233221291. The next prime is 21233221307. The reversal of 21233221299 is 99212233212.

21233221299 is a `hidden beast` number, since 2 + 12 + 332 + 21 + 299 = 666.

It is an interprime number because it is at equal distance from previous prime (21233221291) and next prime (21233221307).

It is not a de Polignac number, because 21233221299 - 2³ = 21233221291 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21233221291) 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, 37059 + ... + 209379.

It is an arithmetic number, because the mean of its divisors is an integer number (2556052226).

Almost surely, 2^21233221299 is an apocalyptic number.

21233221299 is a deficient number, since it is larger than the sum of its proper divisors (9439405413).

21233221299 is a wasteful number, since it uses less digits than its factorization.

21233221299 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 186018 (or 186015 counting only the distinct ones).

The product of its digits is 23328, while the sum is 36.

The spelling of 21233221299 in words is "twenty-one billion, two hundred thirty-three million, two hundred twenty-one thousand, two hundred ninety-nine".