2212120331 has 4 divisors (see below), whose sum is σ = 2212225032. Its totient is φ = 2212015632.

The previous prime is 2212120321. The next prime is 2212120349. The reversal of 2212120331 is 1330212122.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2212120331 is a prime.

It is a super-2 number, since 2×2212120331² = 9786952717647099122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2212120321) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8306 + ... + 67031.

It is an arithmetic number, because the mean of its divisors is an integer number (553056258).

Almost surely, 2^2212120331 is an apocalyptic number.

2212120331 is a deficient number, since it is larger than the sum of its proper divisors (104701).

2212120331 is an equidigital number, since it uses as much as digits as its factorization.

2212120331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104700.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 2212120331 is about 47033.1832964770. The cubic root of 2212120331 is about 1302.9754981574.

Adding to 2212120331 its reverse (1330212122), we get a palindrome (3542332453).

The spelling of 2212120331 in words is "two billion, two hundred twelve million, one hundred twenty thousand, three hundred thirty-one".