222331001 has 2 divisors, whose sum is σ = 222331002. Its totient is φ = 222331000.

The previous prime is 222330971. The next prime is 222331013. The reversal of 222331001 is 100133222.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 220225600 + 2105401 = 14840^2 + 1451^2 .

It is a cyclic number.

It is not a de Polignac number, because 222331001 - 2⁶ = 222330937 is a prime.

It is not a weakly prime, because it can be changed into another prime (222331051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111165500 + 111165501.

It is an arithmetic number, because the mean of its divisors is an integer number (111165501).

Almost surely, 2^222331001 is an apocalyptic number.

It is an amenable number.

222331001 is a deficient number, since it is larger than the sum of its proper divisors (1).

222331001 is an equidigital number, since it uses as much as digits as its factorization.

222331001 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 222331001 is about 14910.7679547366. The cubic root of 222331001 is about 605.8056802341.

Adding to 222331001 its reverse (100133222), we get a palindrome (322464223).

The spelling of 222331001 in words is "two hundred twenty-two million, three hundred thirty-one thousand, one".