21227422330 has 16 divisors (see below), whose sum is σ = 38835744264. Its totient is φ = 8351772480.

The previous prime is 21227422319. The next prime is 21227422343. The reversal of 21227422330 is 3322472212.

It can be written as a sum of positive squares in 4 ways, for example, as 7263982441 + 13963439889 = 85229^2 + 118167^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17398917 + ... + 17400136.

Almost surely, 2^21227422330 is an apocalyptic number.

21227422330 is a deficient number, since it is larger than the sum of its proper divisors (17608321934).

21227422330 is a wasteful number, since it uses less digits than its factorization.

21227422330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34799121.

The product of its (nonzero) digits is 8064, while the sum is 28.

Adding to 21227422330 its reverse (3322472212), we get a palindrome (24549894542).

The spelling of 21227422330 in words is "twenty-one billion, two hundred twenty-seven million, four hundred twenty-two thousand, three hundred thirty".