11112221210120 has 16 divisors (see below), whose sum is σ = 25002497722860. Its totient is φ = 4444888484032.

The previous prime is 11112221210113. The next prime is 11112221210143. The reversal of 11112221210120 is 2101212221111.

It can be written as a sum of positive squares in 2 ways, for example, as 10233716164324 + 878505045796 = 3199018^2 + 937286^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 138902765087 + ... + 138902765166.

Almost surely, 2^{11112221210120} is an apocalyptic number.

11112221210120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11112221210120 is an abundant number, since it is smaller than the sum of its proper divisors (13890276512740).

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

11112221210120 is a wasteful number, since it uses less digits than its factorization.

11112221210120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 277805530264 (or 277805530260 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 11112221210120 its reverse (2101212221111), we get a palindrome (13213433431231).

The spelling of 11112221210120 in words is "eleven trillion, one hundred twelve billion, two hundred twenty-one million, two hundred ten thousand, one hundred twenty".