21322231132 has 12 divisors (see below), whose sum is σ = 37946343960. Its totient is φ = 10480418576.

The previous prime is 21322231127. The next prime is 21322231187. The reversal of 21322231132 is 23113222312.

It is a congruent 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, 45173983 + ... + 45174454.

It is an arithmetic number, because the mean of its divisors is an integer number (3162195330).

Almost surely, 2^21322231132 is an apocalyptic number.

It is an amenable number.

21322231132 is a deficient number, since it is larger than the sum of its proper divisors (16624112828).

21322231132 is a wasteful number, since it uses less digits than its factorization.

21322231132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90348500 (or 90348498 counting only the distinct ones).

The product of its digits is 864, while the sum is 22.

Adding to 21322231132 its reverse (23113222312), we get a palindrome (44435453444).

The spelling of 21322231132 in words is "twenty-one billion, three hundred twenty-two million, two hundred thirty-one thousand, one hundred thirty-two".