1000222331 has 2 divisors, whose sum is σ = 1000222332. Its totient is φ = 1000222330.

The previous prime is 1000222309. The next prime is 1000222337. The reversal of 1000222331 is 1332220001.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1000222331 - 2²² = 996028027 is a prime.

It is a super-2 number, since 2×1000222331² = 2000889422862147122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1000222337) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 500111165 + 500111166.

It is an arithmetic number, because the mean of its divisors is an integer number (500111166).

Almost surely, 2^1000222331 is an apocalyptic number.

1000222331 is a deficient number, since it is larger than the sum of its proper divisors (1).

1000222331 is an equidigital number, since it uses as much as digits as its factorization.

1000222331 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 1000222331 is about 31626.2917680844. The cubic root of 1000222331 is about 1000.0741048417.

Adding to 1000222331 its reverse (1332220001), we get a palindrome (2332442332).

The spelling of 1000222331 in words is "one billion, two hundred twenty-two thousand, three hundred thirty-one".