1112221000 has 64 divisors (see below), whose sum is σ = 2839224960. Its totient is φ = 404440000.

The previous prime is 1112220973. The next prime is 1112221027. The reversal of 1112221000 is 1222111.

It is an interprime number because it is at equal distance from previous prime (1112220973) and next prime (1112221027).

It is a Harshad number since it is a multiple of its sum of digits (10).

It is an unprimeable number.

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, 39556 + ... + 61555.

It is an arithmetic number, because the mean of its divisors is an integer number (44362890).

Almost surely, 2^1112221000 is an apocalyptic number.

1112221000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1112221000 is an abundant number, since it is smaller than the sum of its proper divisors (1727003960).

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

1112221000 is a wasteful number, since it uses less digits than its factorization.

1112221000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101143 (or 101129 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 10.

The square root of 1112221000 is about 33349.9775112368. The cubic root of 1112221000 is about 1036.0889221687.

Adding to 1112221000 its reverse (1222111), we get a palindrome (1113443111).

The spelling of 1112221000 in words is "one billion, one hundred twelve million, two hundred twenty-one thousand".