21110301232 has 80 divisors (see below), whose sum is σ = 43545570048. Its totient is φ = 9892650240.

The previous prime is 21110301193. The next prime is 21110301307. The reversal of 21110301232 is 23210301112.

It is a Harshad number since it is a multiple of its sum of digits (16).

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, 6351123 + ... + 6354445.

Almost surely, 2^21110301232 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21110301232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21772785024).

21110301232 is an abundant number, since it is smaller than the sum of its proper divisors (22435268816).

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

21110301232 is a wasteful number, since it uses less digits than its factorization.

21110301232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3698 (or 3692 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 21110301232 its reverse (23210301112), we get a palindrome (44320602344).

The spelling of 21110301232 in words is "twenty-one billion, one hundred ten million, three hundred one thousand, two hundred thirty-two".