21003222330 has 48 divisors (see below), whose sum is σ = 54622623744. Its totient is φ = 5599398240.

The previous prime is 21003222319. The next prime is 21003222349. The reversal of 21003222330 is 3322230012.

It is a happy number.

21003222330 is a `hidden beast` number, since 2 + 10 + 0 + 322 + 2 + 330 = 666.

It is a super-2 number, since 2×21003222330² (a number of 21 digits) contains 22 as substring.

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 23 ways as a sum of consecutive naturals, for example, 341607 + ... + 398373.

It is an arithmetic number, because the mean of its divisors is an integer number (1137971328).

Almost surely, 2^21003222330 is an apocalyptic number.

21003222330 is an abundant number, since it is smaller than the sum of its proper divisors (33619401414).

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

21003222330 is a wasteful number, since it uses less digits than its factorization.

21003222330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60891 (or 60888 counting only the distinct ones).

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

Adding to 21003222330 its reverse (3322230012), we get a palindrome (24325452342).

The spelling of 21003222330 in words is "twenty-one billion, three million, two hundred twenty-two thousand, three hundred thirty".