2213212220 has 12 divisors (see below), whose sum is σ = 4647745704. Its totient is φ = 885284880.

The previous prime is 2213212123. The next prime is 2213212259. The reversal of 2213212220 is 222123122.

2213212220 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 55330286 + ... + 55330325.

It is an arithmetic number, because the mean of its divisors is an integer number (387312142).

Almost surely, 2^2213212220 is an apocalyptic number.

2213212220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2213212220 is an abundant number, since it is smaller than the sum of its proper divisors (2434533484).

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

2213212220 is a wasteful number, since it uses less digits than its factorization.

2213212220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110660620 (or 110660618 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 2213212220 is about 47044.7895095727. The cubic root of 2213212220 is about 1303.1898431275.

Adding to 2213212220 its reverse (222123122), we get a palindrome (2435335342).

The spelling of 2213212220 in words is "two billion, two hundred thirteen million, two hundred twelve thousand, two hundred twenty".