111111010010010 has 24 divisors (see below), whose sum is σ = 288888626026260. Its totient is φ = 29629602669312.

The previous prime is 111111010010009. The next prime is 111111010010041. The reversal of 111111010010010 is 10010010111111.

It can be written as a sum of positive squares in 2 ways, for example, as 109592695634409 + 1518314375601 = 10468653^2 + 1232199^2 .

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 = 111111010009974 and 111111010010001.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 617283388855 + ... + 617283389034.

Almost surely, 2^{111111010010010} is an apocalyptic number.

111111010010010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

111111010010010 is an abundant number, since it is smaller than the sum of its proper divisors (177777616016250).

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

111111010010010 is a wasteful number, since it uses less digits than its factorization.

111111010010010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1234566777902 (or 1234566777899 counting only the distinct ones).

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

Adding to 111111010010010 its reverse (10010010111111), we get a palindrome (121121020121121).

The spelling of 111111010010010 in words is "one hundred eleven trillion, one hundred eleven billion, ten million, ten thousand, ten".