1011111211120 has 20 divisors (see below), whose sum is σ = 2350833566040. Its totient is φ = 404444484416.

The previous prime is 1011111211081. The next prime is 1011111211133. The reversal of 1011111211120 is 211121111101.

It is a tau number, because it is divible by the number of its divisors (20).

It is a self number, because there is not a number n which added to its sum of digits gives 1011111211120.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6319444990 + ... + 6319445149.

It is an arithmetic number, because the mean of its divisors is an integer number (117541678302).

Almost surely, 2^{1011111211120} is an apocalyptic number.

1011111211120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1011111211120 is an abundant number, since it is smaller than the sum of its proper divisors (1339722354920).

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

1011111211120 is a wasteful number, since it uses less digits than its factorization.

1011111211120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12638890152 (or 12638890146 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 13.

Adding to 1011111211120 its reverse (211121111101), we get a palindrome (1222232322221).

The spelling of 1011111211120 in words is "one trillion, eleven billion, one hundred eleven million, two hundred eleven thousand, one hundred twenty".