21311112332 has 12 divisors (see below), whose sum is σ = 37449197016. Its totient is φ = 10611341760.

The previous prime is 21311112299. The next prime is 21311112341. The reversal of 21311112332 is 23321111312.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11052518 + ... + 11054445.

It is an arithmetic number, because the mean of its divisors is an integer number (3120766418).

Almost surely, 2^21311112332 is an apocalyptic number.

It is an amenable number.

21311112332 is a deficient number, since it is larger than the sum of its proper divisors (16138084684).

21311112332 is a wasteful number, since it uses less digits than its factorization.

21311112332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22107208 (or 22107206 counting only the distinct ones).

The product of its digits is 216, while the sum is 20.

Adding to 21311112332 its reverse (23321111312), we get a palindrome (44632223644).

The spelling of 21311112332 in words is "twenty-one billion, three hundred eleven million, one hundred twelve thousand, three hundred thirty-two".