21003222332 has 6 divisors (see below), whose sum is σ = 36755639088. Its totient is φ = 10501611164.

The previous prime is 21003222319. The next prime is 21003222349. The reversal of 21003222332 is 23322230012.

It is a super-2 number, since 2×21003222332² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2625402788 + ... + 2625402795.

It is an arithmetic number, because the mean of its divisors is an integer number (6125939848).

Almost surely, 2^21003222332 is an apocalyptic number.

It is an amenable number.

21003222332 is a deficient number, since it is larger than the sum of its proper divisors (15752416756).

21003222332 is a wasteful number, since it uses less digits than its factorization.

21003222332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5250805587 (or 5250805585 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 20.

Adding to 21003222332 its reverse (23322230012), we get a palindrome (44325452344).

The spelling of 21003222332 in words is "twenty-one billion, three million, two hundred twenty-two thousand, three hundred thirty-two".