1112222220 has 48 divisors (see below), whose sum is σ = 3198396768. Its totient is φ = 288576000.

The previous prime is 1112222213. The next prime is 1112222227. The reversal of 1112222220 is 222222111.

It is an interprime number because it is at equal distance from previous prime (1112222213) and next prime (1112222227).

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 1112222220.

It is not an unprimeable number, because it can be changed into a prime (1112222227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 248281 + ... + 252720.

It is an arithmetic number, because the mean of its divisors is an integer number (66633266).

Almost surely, 2^1112222220 is an apocalyptic number.

1112222220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1112222220 is an abundant number, since it is smaller than the sum of its proper divisors (2086174548).

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

1112222220 is a wasteful number, since it uses less digits than its factorization.

1112222220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 501050 (or 501048 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 15.

The square root of 1112222220 is about 33349.9958020987. The cubic root of 1112222220 is about 1036.0893009987.

Adding to 1112222220 its reverse (222222111), we get a palindrome (1334444331).

The spelling of 1112222220 in words is "one billion, one hundred twelve million, two hundred twenty-two thousand, two hundred twenty".