2222211111220 has 48 divisors (see below), whose sum is σ = 4977218670480. Its totient is φ = 830490558464.

The previous prime is 2222211111217. The next prime is 2222211111221. The reversal of 2222211111220 is 221111122222.

It can be written as a sum of positive squares in 8 ways, for example, as 357331363984 + 1864879747236 = 597772^2 + 1365606^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2222211111221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23807125 + ... + 23900284.

It is an arithmetic number, because the mean of its divisors is an integer number (103692055635).

Almost surely, 2^{2222211111220} is an apocalyptic number.

2222211111220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2222211111220 is an abundant number, since it is smaller than the sum of its proper divisors (2755007559260).

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

2222211111220 is a wasteful number, since it uses less digits than its factorization.

2222211111220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47707572 (or 47707570 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 2222211111220 its reverse (221111122222), we get a palindrome (2443322233442).

The spelling of 2222211111220 in words is "two trillion, two hundred twenty-two billion, two hundred eleven million, one hundred eleven thousand, two hundred twenty".