111012102100000 has 72 divisors (see below), whose sum is σ = 273176360851716. Its totient is φ = 44404840800000.

The previous prime is 111012102099967. The next prime is 111012102100001. The reversal of 111012102100000 is 1201210111.

It can be written as a sum of positive squares in 6 ways, for example, as 2992913840016 + 108019188259984 = 1730004^2 + 10393228^2 .

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a self number, because there is not a number n which added to its sum of digits gives 111012102100000.

It is not an unprimeable number, because it can be changed into a prime (111012102100001) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 554960511 + ... + 555160510.

Almost surely, 2^{111012102100000} is an apocalyptic number.

111012102100000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111012102100000 is an abundant number, since it is smaller than the sum of its proper divisors (162164258751716).

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

111012102100000 is an frugal number, since it uses more digits than its factorization.

111012102100000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1110121056 (or 1110121028 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 111012102100000 its reverse (1201210111), we get a palindrome (111013303310111).

The spelling of 111012102100000 in words is "one hundred eleven trillion, twelve billion, one hundred two million, one hundred thousand".