21222031301232 has 40 divisors (see below), whose sum is σ = 54823884499200. Its totient is φ = 7073971254720.

The previous prime is 21222031301183. The next prime is 21222031301267. The reversal of 21222031301232 is 23210313022212.

It is a super-2 number, since 2×21222031301232² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

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, 8295769 + ... + 10548167.

It is an arithmetic number, because the mean of its divisors is an integer number (1370597112480).

Almost surely, 2^{21222031301232} is an apocalyptic number.

It is an amenable number.

21222031301232 is an abundant number, since it is smaller than the sum of its proper divisors (33601853197968).

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

21222031301232 is a wasteful number, since it uses less digits than its factorization.

21222031301232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2448701 (or 2448695 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 24.

Adding to 21222031301232 its reverse (23210313022212), we get a palindrome (44432344323444).

The spelling of 21222031301232 in words is "twenty-one trillion, two hundred twenty-two billion, thirty-one million, three hundred one thousand, two hundred thirty-two".