2112233221 has 32 divisors (see below), whose sum is σ = 2717618688. Its totient is φ = 1599037440.

The previous prime is 2112233197. The next prime is 2112233231. The reversal of 2112233221 is 1223322112.

It is not a de Polignac number, because 2112233221 - 2²¹ = 2110136069 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2112233231) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 137781 + ... + 152341.

It is an arithmetic number, because the mean of its divisors is an integer number (84925584).

Almost surely, 2^2112233221 is an apocalyptic number.

It is an amenable number.

2112233221 is a deficient number, since it is larger than the sum of its proper divisors (605385467).

2112233221 is a wasteful number, since it uses less digits than its factorization.

2112233221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14661.

The product of its digits is 288, while the sum is 19.

The square root of 2112233221 is about 45959.0385125712. The cubic root of 2112233221 is about 1283.0609565457.

Adding to 2112233221 its reverse (1223322112), we get a palindrome (3335555333).

The spelling of 2112233221 in words is "two billion, one hundred twelve million, two hundred thirty-three thousand, two hundred twenty-one".