1000022222 has 4 divisors (see below), whose sum is σ = 1500033336. Its totient is φ = 500011110.

The previous prime is 1000022213. The next prime is 1000022237. The reversal of 1000022222 is 2222200001.

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

1000022222 is a modest number, since divided by 22222 gives 10000 as remainder.

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, 250005554 + ... + 250005557.

It is an arithmetic number, because the mean of its divisors is an integer number (375008334).

Almost surely, 2^1000022222 is an apocalyptic number.

1000022222 is a deficient number, since it is larger than the sum of its proper divisors (500011114).

1000022222 is an equidigital number, since it uses as much as digits as its factorization.

1000022222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 500011113.

The product of its (nonzero) digits is 32, while the sum is 11.

The square root of 1000022222 is about 31623.1279604027. The cubic root of 1000022222 is about 1000.0074072785.

Adding to 1000022222 its reverse (2222200001), we get a palindrome (3222222223).

The spelling of 1000022222 in words is "one billion, twenty-two thousand, two hundred twenty-two".