111111100010010 has 24 divisors (see below), whose sum is σ = 288888860026260. Its totient is φ = 29629626669312.

The previous prime is 111111100010003. The next prime is 111111100010017. The reversal of 111111100010010 is 10010001111111.

It is an interprime number because it is at equal distance from previous prime (111111100010003) and next prime (111111100010017).

It can be written as a sum of positive squares in 2 ways, for example, as 106033995992961 + 5077104017049 = 10297281^2 + 2253243^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 111111100009974 and 111111100010001.

It is not an unprimeable number, because it can be changed into a prime (111111100010017) 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, 617283888855 + ... + 617283889034.

Almost surely, 2^{111111100010010} is an apocalyptic number.

111111100010010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

111111100010010 is an abundant number, since it is smaller than the sum of its proper divisors (177777760016250).

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

111111100010010 is a wasteful number, since it uses less digits than its factorization.

111111100010010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1234567777902 (or 1234567777899 counting only the distinct ones).

The product of its (nonzero) digits is 1, while the sum is 9.

Adding to 111111100010010 its reverse (10010001111111), we get a palindrome (121121101121121).

The spelling of 111111100010010 in words is "one hundred eleven trillion, one hundred eleven billion, one hundred million, ten thousand, ten".