2200112021 has 4 divisors (see below), whose sum is σ = 2201143692. Its totient is φ = 2199080352.

The previous prime is 2200112017. The next prime is 2200112051. The reversal of 2200112021 is 1202110022.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1202110022 = 2 ⋅601055011.

It can be written as a sum of positive squares in 2 ways, for example, as 1210065796 + 990046225 = 34786^2 + 31465^2 .

It is a cyclic number.

It is not a de Polignac number, because 2200112021 - 2² = 2200112017 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2200111993 and 2200112011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2200112051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 512630 + ... + 516903.

It is an arithmetic number, because the mean of its divisors is an integer number (550285923).

Almost surely, 2^2200112021 is an apocalyptic number.

It is an amenable number.

2200112021 is a deficient number, since it is larger than the sum of its proper divisors (1031671).

2200112021 is a wasteful number, since it uses less digits than its factorization.

2200112021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1031670.

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

The square root of 2200112021 is about 46905.3517309059. The cubic root of 2200112021 is about 1300.6135212577.

Adding to 2200112021 its reverse (1202110022), we get a palindrome (3402222043).

The spelling of 2200112021 in words is "two billion, two hundred million, one hundred twelve thousand, twenty-one".