2213121200 has 60 divisors (see below), whose sum is σ = 5629807080. Its totient is φ = 833172480.

The previous prime is 2213121193. The next prime is 2213121221. The reversal of 2213121200 is 21213122.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 155930 + ... + 169529.

It is an arithmetic number, because the mean of its divisors is an integer number (93830118).

Almost surely, 2^2213121200 is an apocalyptic number.

2213121200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2213121200 is an abundant number, since it is smaller than the sum of its proper divisors (3416685880).

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

2213121200 is a wasteful number, since it uses less digits than its factorization.

2213121200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 325494 (or 325483 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 2213121200 is about 47043.8221236328. The cubic root of 2213121200 is about 1303.1719779984.

Adding to 2213121200 its reverse (21213122), we get a palindrome (2234334322).

The spelling of 2213121200 in words is "two billion, two hundred thirteen million, one hundred twenty-one thousand, two hundred".