1112221222002 has 48 divisors (see below), whose sum is σ = 2690023441248. Its totient is φ = 329198667840.

The previous prime is 1112221221983. The next prime is 1112221222093. The reversal of 1112221222002 is 2002221222111.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

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 23 ways as a sum of consecutive naturals, for example, 65308683 + ... + 65325710.

It is an arithmetic number, because the mean of its divisors is an integer number (56042155026).

Almost surely, 2^{1112221222002} is an apocalyptic number.

1112221222002 is an abundant number, since it is smaller than the sum of its proper divisors (1577802219246).

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

1112221222002 is a wasteful number, since it uses less digits than its factorization.

1112221222002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130634455 (or 130634452 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 1112221222002 its reverse (2002221222111), we get a palindrome (3114442444113).

The spelling of 1112221222002 in words is "one trillion, one hundred twelve billion, two hundred twenty-one million, two hundred twenty-two thousand, two".