111111100002 has 32 divisors (see below), whose sum is σ = 282186921600. Its totient is φ = 31746028464.

The previous prime is 111111099991. The next prime is 111111100007. The reversal of 111111100002 is 200001111111.

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

It is not an unprimeable number, because it can be changed into a prime (111111100007) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 146971977 + ... + 146972732.

It is an arithmetic number, because the mean of its divisors is an integer number (8818341300).

Almost surely, 2^111111100002 is an apocalyptic number.

111111100002 is an abundant number, since it is smaller than the sum of its proper divisors (171075821598).

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

111111100002 is a wasteful number, since it uses less digits than its factorization.

111111100002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 293944727 (or 293944721 counting only the distinct ones).

The product of its (nonzero) digits is 2, while the sum is 9.

Adding to 111111100002 its reverse (200001111111), we get a palindrome (311112211113).

The spelling of 111111100002 in words is "one hundred eleven billion, one hundred eleven million, one hundred thousand, two".