2203111212 has 96 divisors (see below), whose sum is σ = 5491100160. Its totient is φ = 685977600.

The previous prime is 2203111201. The next prime is 2203111213. The reversal of 2203111212 is 2121113022.

It is a junction number, because it is equal to n+sod(n) for n = 2203111191 and 2203111200.

It is not an unprimeable number, because it can be changed into a prime (2203111213) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3142462 + ... + 3143162.

It is an arithmetic number, because the mean of its divisors is an integer number (57198960).

Almost surely, 2^2203111212 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2203111212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2745550080).

2203111212 is an abundant number, since it is smaller than the sum of its proper divisors (3287988948).

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

2203111212 is a wasteful number, since it uses less digits than its factorization.

2203111212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 983 (or 981 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 15.

The square root of 2203111212 is about 46937.3115122713. The cubic root of 2203111212 is about 1301.2042513590.

Adding to 2203111212 its reverse (2121113022), we get a palindrome (4324224234).

The spelling of 2203111212 in words is "two billion, two hundred three million, one hundred eleven thousand, two hundred twelve".