21110233332 has 24 divisors (see below), whose sum is σ = 49412605536. Its totient is φ = 7014545248.

The previous prime is 21110233321. The next prime is 21110233357. The reversal of 21110233332 is 23333201112.

It is a junction number, because it is equal to n+sod(n) for n = 21110233299 and 21110233308.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2770938 + ... + 2778545.

It is an arithmetic number, because the mean of its divisors is an integer number (2058858564).

Almost surely, 2^21110233332 is an apocalyptic number.

It is an amenable number.

21110233332 is an abundant number, since it is smaller than the sum of its proper divisors (28302372204).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21110233332 is a wasteful number, since it uses less digits than its factorization.

21110233332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5549807 (or 5549805 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 21110233332 its reverse (23333201112), we get a palindrome (44443434444).

The spelling of 21110233332 in words is "twenty-one billion, one hundred ten million, two hundred thirty-three thousand, three hundred thirty-two".