21300222330 has 24 divisors (see below), whose sum is σ = 55380578292. Its totient is φ = 5680059264.

The previous prime is 21300222323. The next prime is 21300222347. The reversal of 21300222330 is 3322200312.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 19204139241 + 2096083089 = 138579^2 + 45783^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 118334479 + ... + 118334658.

Almost surely, 2^21300222330 is an apocalyptic number.

21300222330 is an abundant number, since it is smaller than the sum of its proper divisors (34080355962).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21300222330 is a wasteful number, since it uses less digits than its factorization.

21300222330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 236669150 (or 236669147 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 18.

Adding to 21300222330 its reverse (3322200312), we get a palindrome (24622422642).

The spelling of 21300222330 in words is "twenty-one billion, three hundred million, two hundred twenty-two thousand, three hundred thirty".