1111012212120 has 64 divisors (see below), whose sum is σ = 3333163357440. Its totient is φ = 296258659200.

The previous prime is 1111012212097. The next prime is 1111012212151. The reversal of 1111012212120 is 212122101111.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 1111012212120.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3274035 + ... + 3597405.

It is an arithmetic number, because the mean of its divisors is an integer number (52080677460).

Almost surely, 2^{1111012212120} is an apocalyptic number.

1111012212120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1111012212120 is an abundant number, since it is smaller than the sum of its proper divisors (2222151145320).

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

1111012212120 is a wasteful number, since it uses less digits than its factorization.

1111012212120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 352016 (or 352012 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 1111012212120 its reverse (212122101111), we get a palindrome (1323134313231).

The spelling of 1111012212120 in words is "one trillion, one hundred eleven billion, twelve million, two hundred twelve thousand, one hundred twenty".