21022331332 has 6 divisors (see below), whose sum is σ = 36789079838. Its totient is φ = 10511165664.

The previous prime is 21022331311. The next prime is 21022331347. The reversal of 21022331332 is 23313322012.

It can be written as a sum of positive squares in only one way, i.e., 13920224256 + 7102107076 = 117984^2 + 84274^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2627791413 + ... + 2627791420.

Almost surely, 2^21022331332 is an apocalyptic number.

It is an amenable number.

21022331332 is a deficient number, since it is larger than the sum of its proper divisors (15766748506).

21022331332 is a wasteful number, since it uses less digits than its factorization.

21022331332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5255582837 (or 5255582835 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 22.

Adding to 21022331332 its reverse (23313322012), we get a palindrome (44335653344).

The spelling of 21022331332 in words is "twenty-one billion, twenty-two million, three hundred thirty-one thousand, three hundred thirty-two".