222012331 has 2 divisors, whose sum is σ = 222012332. Its totient is φ = 222012330.

The previous prime is 222012319. The next prime is 222012341. The reversal of 222012331 is 133210222.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-222012331 is a prime.

It is a super-2 number, since 2×222012331² = 98578950232107122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (222012341) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111006165 + 111006166.

It is an arithmetic number, because the mean of its divisors is an integer number (111006166).

Almost surely, 2^222012331 is an apocalyptic number.

222012331 is a deficient number, since it is larger than the sum of its proper divisors (1).

222012331 is an equidigital number, since it uses as much as digits as its factorization.

222012331 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 222012331 is about 14900.0782212712. The cubic root of 222012331 is about 605.5161053758.

Adding to 222012331 its reverse (133210222), we get a palindrome (355222553).

The spelling of 222012331 in words is "two hundred twenty-two million, twelve thousand, three hundred thirty-one".