111010101011010 has 160 divisors (see below), whose sum is σ = 306241479023040. Its totient is φ = 28837964518272.

The previous prime is 111010101010927. The next prime is 111010101011039. The reversal of 111010101011010 is 10110101010111.

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 = 111010101010983 and 111010101011001.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 8995824 + ... + 17405316.

It is an arithmetic number, because the mean of its divisors is an integer number (1914009243894).

Almost surely, 2^{111010101011010} is an apocalyptic number.

111010101011010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 111010101011010, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (153120739511520).

111010101011010 is an abundant number, since it is smaller than the sum of its proper divisors (195231378012030).

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

111010101011010 is a wasteful number, since it uses less digits than its factorization.

111010101011010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8409934 (or 8409925 counting only the distinct ones).

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

Adding to 111010101011010 its reverse (10110101010111), we get a palindrome (121120202021121).

The spelling of 111010101011010 in words is "one hundred eleven trillion, ten billion, one hundred one million, eleven thousand, ten".