2011122200 has 48 divisors (see below), whose sum is σ = 4679198280. Its totient is φ = 803874560.

The previous prime is 2011122173. The next prime is 2011122209. The reversal of 2011122200 is 22211102.

It is a happy number.

It is a super-2 number, since 2×2011122200² = 8089225006665680000, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2011122209) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 378764 + ... + 384036.

Almost surely, 2^2011122200 is an apocalyptic number.

2011122200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2011122200 is an abundant number, since it is smaller than the sum of its proper divisors (2668076080).

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

2011122200 is a wasteful number, since it uses less digits than its factorization.

2011122200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7196 (or 7187 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

The square root of 2011122200 is about 44845.5371246683. The cubic root of 2011122200 is about 1262.2522495258.

Adding to 2011122200 its reverse (22211102), we get a palindrome (2033333302).

The spelling of 2011122200 in words is "two billion, eleven million, one hundred twenty-two thousand, two hundred".