1111112002120 has 16 divisors (see below), whose sum is σ = 2500002004860. Its totient is φ = 444444800832.

The previous prime is 1111112002111. The next prime is 1111112002157. The reversal of 1111112002120 is 212002111111.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1102789819044 + 8322183076 = 1050138^2 + 91226^2 .

It is a super-2 number, since 2×1111112002120² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1111112002120.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13888899987 + ... + 13888900066.

Almost surely, 2^{1111112002120} is an apocalyptic number.

1111112002120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1111112002120 is an abundant number, since it is smaller than the sum of its proper divisors (1388890002740).

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

1111112002120 is a wasteful number, since it uses less digits than its factorization.

1111112002120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27777800064 (or 27777800060 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 1111112002120 its reverse (212002111111), we get a palindrome (1323114113231).

The spelling of 1111112002120 in words is "one trillion, one hundred eleven billion, one hundred twelve million, two thousand, one hundred twenty".