21102222332 has 24 divisors (see below), whose sum is σ = 39188318400. Its totient is φ = 9908326400.

The previous prime is 21102222313. The next prime is 21102222353. The reversal of 21102222332 is 23322220112.

It is a happy number.

It is a congruent number.

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, 315044 + ... + 376107.

It is an arithmetic number, because the mean of its divisors is an integer number (1632846600).

Almost surely, 2^21102222332 is an apocalyptic number.

It is an amenable number.

21102222332 is a deficient number, since it is larger than the sum of its proper divisors (18086096068).

21102222332 is a wasteful number, since it uses less digits than its factorization.

21102222332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 691621 (or 691619 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 21102222332 its reverse (23322220112), we get a palindrome (44424442444).

The spelling of 21102222332 in words is "twenty-one billion, one hundred two million, two hundred twenty-two thousand, three hundred thirty-two".