21113233132 has 6 divisors (see below), whose sum is σ = 36948157988. Its totient is φ = 10556616564.

The previous prime is 21113233073. The next prime is 21113233133. The reversal of 21113233132 is 23133231112.

It is a super-2 number, since 2×21113233132² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (21113233133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2639154138 + ... + 2639154145.

Almost surely, 2^21113233132 is an apocalyptic number.

It is an amenable number.

21113233132 is a deficient number, since it is larger than the sum of its proper divisors (15834924856).

21113233132 is a wasteful number, since it uses less digits than its factorization.

21113233132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5278308287 (or 5278308285 counting only the distinct ones).

The product of its digits is 648, while the sum is 22.

Adding to 21113233132 its reverse (23133231112), we get a palindrome (44246464244).

The spelling of 21113233132 in words is "twenty-one billion, one hundred thirteen million, two hundred thirty-three thousand, one hundred thirty-two".