2211111220220 has 72 divisors (see below), whose sum is σ = 5403043976400. Its totient is φ = 757868590080.

The previous prime is 2211111220163. The next prime is 2211111220223. The reversal of 2211111220220 is 220221111122.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2211111220223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2958131 + ... + 3629429.

It is an arithmetic number, because the mean of its divisors is an integer number (75042277450).

Almost surely, 2^{2211111220220} is an apocalyptic number.

2211111220220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2211111220220 is an abundant number, since it is smaller than the sum of its proper divisors (3191932756180).

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

2211111220220 is a wasteful number, since it uses less digits than its factorization.

2211111220220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 674683 (or 674674 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 2211111220220 its reverse (220221111122), we get a palindrome (2431332331342).

The spelling of 2211111220220 in words is "two trillion, two hundred eleven billion, one hundred eleven million, two hundred twenty thousand, two hundred twenty".