1001111222 has 4 divisors (see below), whose sum is σ = 1501666836. Its totient is φ = 500555610.

The previous prime is 1001111219. The next prime is 1001111231. The reversal of 1001111222 is 2221111001.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 250277804 + ... + 250277807.

It is an arithmetic number, because the mean of its divisors is an integer number (375416709).

Almost surely, 2^1001111222 is an apocalyptic number.

1001111222 is a deficient number, since it is larger than the sum of its proper divisors (500555614).

1001111222 is an equidigital number, since it uses as much as digits as its factorization.

1001111222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 500555613.

The product of its (nonzero) digits is 8, while the sum is 11.

The square root of 1001111222 is about 31640.3416858921. The cubic root of 1001111222 is about 1000.3702702164.

Adding to 1001111222 its reverse (2221111001), we get a palindrome (3222222223).

The spelling of 1001111222 in words is "one billion, one million, one hundred eleven thousand, two hundred twenty-two".