111120100002 has 48 divisors (see below), whose sum is σ = 248905006272. Its totient is φ = 35800250400.

The previous prime is 111120099997. The next prime is 111120100037. The reversal of 111120100002 is 200001021111.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (9).

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 23 ways as a sum of consecutive naturals, for example, 451908 + ... + 653039.

It is an arithmetic number, because the mean of its divisors is an integer number (5185520964).

Almost surely, 2^111120100002 is an apocalyptic number.

111120100002 is an abundant number, since it is smaller than the sum of its proper divisors (137784906270).

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

111120100002 is a wasteful number, since it uses less digits than its factorization.

111120100002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1105143 (or 1105140 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

Adding to 111120100002 its reverse (200001021111), we get a palindrome (311121121113).

The spelling of 111120100002 in words is "one hundred eleven billion, one hundred twenty million, one hundred thousand, two".