21103231003132 has 48 divisors (see below), whose sum is σ = 39321161994240. Its totient is φ = 9875634607872.

The previous prime is 21103231003109. The next prime is 21103231003193. The reversal of 21103231003132 is 23130013230112.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13178553 + ... + 14692879.

It is an arithmetic number, because the mean of its divisors is an integer number (819190874880).

Almost surely, 2^{21103231003132} is an apocalyptic number.

It is an amenable number.

21103231003132 is a deficient number, since it is larger than the sum of its proper divisors (18217930991108).

21103231003132 is a wasteful number, since it uses less digits than its factorization.

21103231003132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1515490 (or 1515488 counting only the distinct ones).

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

Adding to 21103231003132 its reverse (23130013230112), we get a palindrome (44233244233244).

The spelling of 21103231003132 in words is "twenty-one trillion, one hundred three billion, two hundred thirty-one million, three thousand, one hundred thirty-two".