21231103132 has 12 divisors (see below), whose sum is σ = 37400487376. Its totient is φ = 10545249600.

The previous prime is 21231103129. The next prime is 21231103133. The reversal of 21231103132 is 23130113212.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21231103133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17574813 + ... + 17576020.

Almost surely, 2^21231103132 is an apocalyptic number.

It is an amenable number.

21231103132 is a deficient number, since it is larger than the sum of its proper divisors (16169384244).

21231103132 is a wasteful number, since it uses less digits than its factorization.

21231103132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35150988 (or 35150986 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 21231103132 its reverse (23130113212), we get a palindrome (44361216344).

The spelling of 21231103132 in words is "twenty-one billion, two hundred thirty-one million, one hundred three thousand, one hundred thirty-two".