111222011111100 has 72 divisors (see below), whose sum is σ = 330499713049968. Its totient is φ = 28857602880000.

The previous prime is 111222011111053. The next prime is 111222011111219. The reversal of 111222011111100 is 1111110222111.

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 111222011111100.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5009989401 + ... + 5010011600.

Almost surely, 2^{111222011111100} is an apocalyptic number.

111222011111100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111222011111100 is an abundant number, since it is smaller than the sum of its proper divisors (219277701938868).

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

111222011111100 is a wasteful number, since it uses less digits than its factorization.

111222011111100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10020001055 (or 10020001048 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 15.

Adding to 111222011111100 its reverse (1111110222111), we get a palindrome (112333121333211).

It can be divided in two parts, 111222011 and 111100, that added together give a palindrome (111333111).

The spelling of 111222011111100 in words is "one hundred eleven trillion, two hundred twenty-two billion, eleven million, one hundred eleven thousand, one hundred".