201112212220 has 12 divisors (see below), whose sum is σ = 422335645704. Its totient is φ = 80444884880.

The previous prime is 201112212179. The next prime is 201112212229. The reversal of 201112212220 is 22212211102.

It is a happy number.

It is a super-2 number, since 2×201112212220² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 201112212194 and 201112212203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201112212229) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5027805286 + ... + 5027805325.

It is an arithmetic number, because the mean of its divisors is an integer number (35194637142).

Almost surely, 2^201112212220 is an apocalyptic number.

201112212220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

201112212220 is an abundant number, since it is smaller than the sum of its proper divisors (221223433484).

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

201112212220 is a wasteful number, since it uses less digits than its factorization.

201112212220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10055610620 (or 10055610618 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 201112212220 its reverse (22212211102), we get a palindrome (223324423322).

The spelling of 201112212220 in words is "two hundred one billion, one hundred twelve million, two hundred twelve thousand, two hundred twenty".