21103232220232 has 64 divisors (see below), whose sum is σ = 40956227769600. Its totient is φ = 10188449118720.

The previous prime is 21103232220227. The next prime is 21103232220251. The reversal of 21103232220232 is 23202223230112.

It is a junction number, because it is equal to n+sod(n) for n = 21103232220197 and 21103232220206.

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, 8444307 + ... + 10654237.

It is an arithmetic number, because the mean of its divisors is an integer number (639941058900).

Almost surely, 2^{21103232220232} is an apocalyptic number.

It is an amenable number.

21103232220232 is a deficient number, since it is larger than the sum of its proper divisors (19852995549368).

21103232220232 is a wasteful number, since it uses less digits than its factorization.

21103232220232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2210326 (or 2210322 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 25.

Adding to 21103232220232 its reverse (23202223230112), we get a palindrome (44305455450344).

The spelling of 21103232220232 in words is "twenty-one trillion, one hundred three billion, two hundred thirty-two million, two hundred twenty thousand, two hundred thirty-two".