1000122222 has 32 divisors (see below), whose sum is σ = 2193537024. Its totient is φ = 301476800.

The previous prime is 1000122191. The next prime is 1000122239. The reversal of 1000122222 is 2222210001.

It is a junction number, because it is equal to n+sod(n) for n = 1000122198 and 1000122207.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 27063 + ... + 52274.

It is an arithmetic number, because the mean of its divisors is an integer number (68548032).

Almost surely, 2^1000122222 is an apocalyptic number.

1000122222 is an abundant number, since it is smaller than the sum of its proper divisors (1193414802).

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

1000122222 is a wasteful number, since it uses less digits than its factorization.

1000122222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79544.

The product of its (nonzero) digits is 32, while the sum is 12.

The square root of 1000122222 is about 31624.7090421398. The cubic root of 1000122222 is about 1000.0407390070.

Adding to 1000122222 its reverse (2222210001), we get a palindrome (3222332223).

It can be divided in two parts, 10001 and 22222, that multiplied together give a palindrome (222242222).

The spelling of 1000122222 in words is "one billion, one hundred twenty-two thousand, two hundred twenty-two".