1112220021220 has 72 divisors (see below), whose sum is σ = 2963994163200. Its totient is φ = 346665977280.

The previous prime is 1112220021203. The next prime is 1112220021229. The reversal of 1112220021220 is 221200222111.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1112220021194 and 1112220021203.

It is not an unprimeable number, because it can be changed into a prime (1112220021229) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 51576420 + ... + 51597979.

It is an arithmetic number, because the mean of its divisors is an integer number (41166585600).

Almost surely, 2^{1112220021220} is an apocalyptic number.

1112220021220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1112220021220 is an abundant number, since it is smaller than the sum of its proper divisors (1851774141980).

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

1112220021220 is a wasteful number, since it uses less digits than its factorization.

1112220021220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103174433 (or 103174424 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 1112220021220 its reverse (221200222111), we get a palindrome (1333420243331).

The spelling of 1112220021220 in words is "one trillion, one hundred twelve billion, two hundred twenty million, twenty-one thousand, two hundred twenty".