111111010001010 has 80 divisors (see below), whose sum is σ = 314489642385600. Its totient is φ = 28070149891104.

The previous prime is 111111010000997. The next prime is 111111010001059. The reversal of 111111010001010 is 10100010111111.

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 = 111111010000983 and 111111010001001.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 3609828990 + ... + 3609859769.

It is an arithmetic number, because the mean of its divisors is an integer number (3931120529820).

Almost surely, 2^{111111010001010} is an apocalyptic number.

111111010001010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

111111010001010 is an abundant number, since it is smaller than the sum of its proper divisors (203378632384590).

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

111111010001010 is a wasteful number, since it uses less digits than its factorization.

111111010001010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7219688797 (or 7219688788 counting only the distinct ones).

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

Adding to 111111010001010 its reverse (10100010111111), we get a palindrome (121211020112121).

The spelling of 111111010001010 in words is "one hundred eleven trillion, one hundred eleven billion, ten million, one thousand, ten".