22011122212220 has 12 divisors (see below), whose sum is σ = 46223356645704. Its totient is φ = 8804448884880.

The previous prime is 22011122212187. The next prime is 22011122212253. The reversal of 22011122212220 is 2221222111022.

It is an interprime number because it is at equal distance from previous prime (22011122212187) and next prime (22011122212253).

It is a Harshad number since it is a multiple of its sum of digits (20), and also a Moran number because the ratio is a prime number: 1100556110611 = 22011122212220 / (2 + 2 + 0 + 1 + 1 + 1 + 2 + 2 + 2 + 1 + 2 + 2 + 2 + 0).

It is a junction number, because it is equal to n+sod(n) for n = 22011122212192 and 22011122212201.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 550278055286 + ... + 550278055325.

It is an arithmetic number, because the mean of its divisors is an integer number (3851946387142).

Almost surely, 2^{22011122212220} is an apocalyptic number.

22011122212220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22011122212220 is an abundant number, since it is smaller than the sum of its proper divisors (24212234433484).

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

22011122212220 is a wasteful number, since it uses less digits than its factorization.

22011122212220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1100556110620 (or 1100556110618 counting only the distinct ones).

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

Adding to 22011122212220 its reverse (2221222111022), we get a palindrome (24232344323242).

The spelling of 22011122212220 in words is "twenty-two trillion, eleven billion, one hundred twenty-two million, two hundred twelve thousand, two hundred twenty".