1001331222 has 16 divisors (see below), whose sum is σ = 2056788912. Its totient is φ = 324756000.

The previous prime is 1001331211. The next prime is 1001331223. The reversal of 1001331222 is 2221331001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1001331223) 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 in 7 ways as a sum of consecutive naturals, for example, 2255029 + ... + 2255472.

It is an arithmetic number, because the mean of its divisors is an integer number (128549307).

Almost surely, 2^1001331222 is an apocalyptic number.

1001331222 is an abundant number, since it is smaller than the sum of its proper divisors (1055457690).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1001331222 is a wasteful number, since it uses less digits than its factorization.

1001331222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4510543.

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 1001331222 is about 31643.8180692533. The cubic root of 1001331222 is about 1000.4435439064.

Adding to 1001331222 its reverse (2221331001), we get a palindrome (3222662223).

The spelling of 1001331222 in words is "one billion, one million, three hundred thirty-one thousand, two hundred twenty-two".