22000022011220 has 96 divisors (see below), whose sum is σ = 52596274026240. Its totient is φ = 7651466127360.

The previous prime is 22000022011193. The next prime is 22000022011283. The reversal of 22000022011220 is 2211022000022.

22000022011220 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 22000022011195 and 22000022011204.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 55426826 + ... + 55822334.

It is an arithmetic number, because the mean of its divisors is an integer number (547877854440).

Almost surely, 2^{22000022011220} is an apocalyptic number.

22000022011220 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 22000022011220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26298137013120).

22000022011220 is an abundant number, since it is smaller than the sum of its proper divisors (30596252015020).

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

22000022011220 is a wasteful number, since it uses less digits than its factorization.

22000022011220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 406545 (or 406543 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 14.

Adding to 22000022011220 its reverse (2211022000022), we get a palindrome (24211044011242).

The spelling of 22000022011220 in words is "twenty-two trillion, twenty-two million, eleven thousand, two hundred twenty".