22011122122220 has 96 divisors (see below), whose sum is σ = 57640411454976. Its totient is φ = 6859265241600.

The previous prime is 22011122122181. The next prime is 22011122122291. The reversal of 22011122122220 is 2222122111022.

22011122122220 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

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 = 22011122122192 and 22011122122201.

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, 6476315 + ... + 9271725.

It is an arithmetic number, because the mean of its divisors is an integer number (600420952656).

Almost surely, 2^{22011122122220} is an apocalyptic number.

22011122122220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22011122122220 is an abundant number, since it is smaller than the sum of its proper divisors (35629289332756).

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

22011122122220 is a wasteful number, since it uses less digits than its factorization.

22011122122220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2800551 (or 2800549 counting only the distinct ones).

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

Adding to 22011122122220 its reverse (2222122111022), we get a palindrome (24233244233242).

The spelling of 22011122122220 in words is "twenty-two trillion, eleven billion, one hundred twenty-two million, one hundred twenty-two thousand, two hundred twenty".