2112200321 has 36 divisors (see below), whose sum is σ = 2766913380. Its totient is φ = 1605542400.

The previous prime is 2112200281. The next prime is 2112200333. The reversal of 2112200321 is 1230022112.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 948640000 + 1163560321 = 30800^2 + 34111^2 .

It is not a de Polignac number, because 2112200321 - 2²⁶ = 2045091457 is a prime.

It is a super-2 number, since 2×2112200321² = 8922780392065006082, 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 = 2112200296 and 2112200305.

It is not an unprimeable number, because it can be changed into a prime (2112200381) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 238745 + ... + 247433.

It is an arithmetic number, because the mean of its divisors is an integer number (76858705).

Almost surely, 2^2112200321 is an apocalyptic number.

It is an amenable number.

2112200321 is a deficient number, since it is larger than the sum of its proper divisors (654713059).

2112200321 is a wasteful number, since it uses less digits than its factorization.

2112200321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8766 (or 8748 counting only the distinct ones).

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

The square root of 2112200321 is about 45958.6805837591. The cubic root of 2112200321 is about 1283.0542948879.

Adding to 2112200321 its reverse (1230022112), we get a palindrome (3342222433).

The spelling of 2112200321 in words is "two billion, one hundred twelve million, two hundred thousand, three hundred twenty-one".