21022333112 has 64 divisors (see below), whose sum is σ = 44485912800. Its totient is φ = 9230080000.

The previous prime is 21022333091. The next prime is 21022333117. The reversal of 21022333112 is 21133322012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21022333117) 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, 335564 + ... + 393252.

Almost surely, 2^21022333112 is an apocalyptic number.

21022333112 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21022333112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22242956400).

21022333112 is an abundant number, since it is smaller than the sum of its proper divisors (23463579688).

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

21022333112 is a wasteful number, since it uses less digits than its factorization.

21022333112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57848 (or 57844 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 21022333112 its reverse (21133322012), we get a palindrome (42155655124).

It can be divided in two parts, 210 and 22333112, that added together give a palindrome (22333322).

The spelling of 21022333112 in words is "twenty-one billion, twenty-two million, three hundred thirty-three thousand, one hundred twelve".