2212011220 has 12 divisors (see below), whose sum is σ = 4645223604. Its totient is φ = 884804480.

The previous prime is 2212011199. The next prime is 2212011239. The reversal of 2212011220 is 221102122.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 333135504 + 1878875716 = 18252^2 + 43346^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 2212011220.

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, 55300261 + ... + 55300300.

It is an arithmetic number, because the mean of its divisors is an integer number (387101967).

Almost surely, 2^2212011220 is an apocalyptic number.

2212011220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2212011220 is an abundant number, since it is smaller than the sum of its proper divisors (2433212384).

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

2212011220 is a wasteful number, since it uses less digits than its factorization.

2212011220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110600570 (or 110600568 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

The square root of 2212011220 is about 47032.0233458013. The cubic root of 2212011220 is about 1302.9540750767.

Adding to 2212011220 its reverse (221102122), we get a palindrome (2433113342).

The spelling of 2212011220 in words is "two billion, two hundred twelve million, eleven thousand, two hundred twenty".