2222201212 has 144 divisors (see below), whose sum is σ = 5253760512. Its totient is φ = 797448960.

The previous prime is 2222201159. The next prime is 2222201231. The reversal of 2222201212 is 2121022222.

It is a super-2 number, since 2×2222201212² = 9876356453228537888, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 5957458 + ... + 5957830.

It is an arithmetic number, because the mean of its divisors is an integer number (36484448).

Almost surely, 2^2222201212 is an apocalyptic number.

2222201212 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2222201212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2626880256).

2222201212 is an abundant number, since it is smaller than the sum of its proper divisors (3031559300).

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

2222201212 is a wasteful number, since it uses less digits than its factorization.

2222201212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 476 (or 445 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 16.

The square root of 2222201212 is about 47140.2292315173. The cubic root of 2222201212 is about 1304.9517677647.

Adding to 2222201212 its reverse (2121022222), we get a palindrome (4343223434).

The spelling of 2222201212 in words is "two billion, two hundred twenty-two million, two hundred one thousand, two hundred twelve".