22112021122220 has 96 divisors (see below), whose sum is σ = 49072287559680. Its totient is φ = 8346201742080.

The previous prime is 22112021122117. The next prime is 22112021122249. The reversal of 22112021122220 is 2222112021122.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 22112021122192 and 22112021122201.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 962510654 + ... + 962533626.

It is an arithmetic number, because the mean of its divisors is an integer number (511169662080).

Almost surely, 2^{22112021122220} is an apocalyptic number.

22112021122220 is a gapful number since it is divisible by the number (20) 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 22112021122220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24536143779840).

22112021122220 is an abundant number, since it is smaller than the sum of its proper divisors (26960266437460).

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

22112021122220 is a wasteful number, since it uses less digits than its factorization.

22112021122220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32895 (or 32893 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 22112021122220 its reverse (2222112021122), we get a palindrome (24334133143342).

The spelling of 22112021122220 in words is "twenty-two trillion, one hundred twelve billion, twenty-one million, one hundred twenty-two thousand, two hundred twenty".