1000222031 has 4 divisors (see below), whose sum is σ = 1000399512. Its totient is φ = 1000044552.

The previous prime is 1000221967. The next prime is 1000222033. The reversal of 1000222031 is 1302220001.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1000222031 - 2⁶ = 1000221967 is a prime.

It is a super-2 number, since 2×1000222031² = 2000888222595529922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1000222033) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 80000 + ... + 91653.

It is an arithmetic number, because the mean of its divisors is an integer number (250099878).

Almost surely, 2^1000222031 is an apocalyptic number.

1000222031 is a deficient number, since it is larger than the sum of its proper divisors (177481).

1000222031 is an equidigital number, since it uses as much as digits as its factorization.

1000222031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 177480.

The product of its (nonzero) digits is 24, while the sum is 11.

The square root of 1000222031 is about 31626.2870251947. The cubic root of 1000222031 is about 1000.0740048565.

Adding to 1000222031 its reverse (1302220001), we get a palindrome (2302442032).

The spelling of 1000222031 in words is "one billion, two hundred twenty-two thousand, thirty-one".