1112212220 has 24 divisors (see below), whose sum is σ = 2669309664. Its totient is φ = 381329856.

The previous prime is 1112212181. The next prime is 1112212223. The reversal of 1112212220 is 222122111.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a junction number, because it is equal to n+sod(n) for n = 1112212195 and 1112212204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1112212223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3972047 + ... + 3972326.

It is an arithmetic number, because the mean of its divisors is an integer number (111221236).

Almost surely, 2^1112212220 is an apocalyptic number.

1112212220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1112212220 is an abundant number, since it is smaller than the sum of its proper divisors (1557097444).

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

1112212220 is a wasteful number, since it uses less digits than its factorization.

1112212220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7944389 (or 7944387 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

The square root of 1112212220 is about 33349.8458767053. The cubic root of 1112212220 is about 1036.0861958266.

Adding to 1112212220 its reverse (222122111), we get a palindrome (1334334331).

The spelling of 1112212220 in words is "one billion, one hundred twelve million, two hundred twelve thousand, two hundred twenty".