21022333024 has 96 divisors (see below), whose sum is σ = 51666854400. Its totient is φ = 8179952640.

The previous prime is 21022333009. The next prime is 21022333027. The reversal of 21022333024 is 42033322012.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a junction number, because it is equal to n+sod(n) for n = 21022332986 and 21022333004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21022333027) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2062212 + ... + 2072380.

It is an arithmetic number, because the mean of its divisors is an integer number (538196400).

Almost surely, 2^21022333024 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 21022333024, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25833427200).

21022333024 is an abundant number, since it is smaller than the sum of its proper divisors (30644521376).

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

21022333024 is a wasteful number, since it uses less digits than its factorization.

21022333024 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11036 (or 11028 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 22.

Adding to 21022333024 its reverse (42033322012), we get a palindrome (63055655036).

The spelling of 21022333024 in words is "twenty-one billion, twenty-two million, three hundred thirty-three thousand, twenty-four".