22201111220 has 12 divisors (see below), whose sum is σ = 46622333604. Its totient is φ = 8880444480.

The previous prime is 22201111183. The next prime is 22201111333. The reversal of 22201111220 is 2211110222.

It can be written as a sum of positive squares in 2 ways, for example, as 16321595536 + 5879515684 = 127756^2 + 76678^2 .

It is a junction number, because it is equal to n+sod(n) for n = 22201111195 and 22201111204.

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, 555027761 + ... + 555027800.

It is an arithmetic number, because the mean of its divisors is an integer number (3885194467).

Almost surely, 2^22201111220 is an apocalyptic number.

22201111220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22201111220 is an abundant number, since it is smaller than the sum of its proper divisors (24421222384).

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

22201111220 is a wasteful number, since it uses less digits than its factorization.

22201111220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1110055570 (or 1110055568 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 22201111220 its reverse (2211110222), we get a palindrome (24412221442).

The spelling of 22201111220 in words is "twenty-two billion, two hundred one million, one hundred eleven thousand, two hundred twenty".