2200111221 has 24 divisors (see below), whose sum is σ = 3722639904. Its totient is φ = 1142914080.

The previous prime is 2200111201. The next prime is 2200111247. The reversal of 2200111221 is 1221110022.

It is not a de Polignac number, because 2200111221 - 2¹³ = 2200103029 is a prime.

It is a super-2 number, since 2×2200111221² = 9680978769540221682, which contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 2200111197 and 2200111206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2200111201) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 678690 + ... + 681923.

It is an arithmetic number, because the mean of its divisors is an integer number (155109996).

Almost surely, 2^2200111221 is an apocalyptic number.

2200111221 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

2200111221 is a deficient number, since it is larger than the sum of its proper divisors (1522528683).

2200111221 is a wasteful number, since it uses less digits than its factorization.

2200111221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1360641 (or 1360634 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

The square root of 2200111221 is about 46905.3432030936. The cubic root of 2200111221 is about 1300.6133636156.

Adding to 2200111221 its reverse (1221110022), we get a palindrome (3421221243).

The spelling of 2200111221 in words is "two billion, two hundred million, one hundred eleven thousand, two hundred twenty-one".