1002112220 has 12 divisors (see below), whose sum is σ = 2104435704. Its totient is φ = 400844880.

The previous prime is 1002112219. The next prime is 1002112253. The reversal of 1002112220 is 222112001.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 25052786 + ... + 25052825.

It is an arithmetic number, because the mean of its divisors is an integer number (175369642).

Almost surely, 2^1002112220 is an apocalyptic number.

1002112220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1002112220 is an abundant number, since it is smaller than the sum of its proper divisors (1102323484).

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

1002112220 is a wasteful number, since it uses less digits than its factorization.

1002112220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50105620 (or 50105618 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

The square root of 1002112220 is about 31656.1561153593. The cubic root of 1002112220 is about 1000.7035781950.

Adding to 1002112220 its reverse (222112001), we get a palindrome (1224224221).

The spelling of 1002112220 in words is "one billion, two million, one hundred twelve thousand, two hundred twenty".