22021321110 has 32 divisors (see below), whose sum is σ = 55960064352. Its totient is φ = 5526919680.

The previous prime is 22021321079. The next prime is 22021321111. The reversal of 22021321110 is 1112312022.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 22021321110.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22021321111) 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, 21589021 + ... + 21590040.

It is an arithmetic number, because the mean of its divisors is an integer number (1748752011).

Almost surely, 2^22021321110 is an apocalyptic number.

22021321110 is an abundant number, since it is smaller than the sum of its proper divisors (33938743242).

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

22021321110 is a wasteful number, since it uses less digits than its factorization.

22021321110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43179088.

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 22021321110 its reverse (1112312022), we get a palindrome (23133633132).

The spelling of 22021321110 in words is "twenty-two billion, twenty-one million, three hundred twenty-one thousand, one hundred ten".