11111222111010 has 128 divisors (see below), whose sum is σ = 31617699840000. Its totient is φ = 2445430901760.

The previous prime is 11111222110951. The next prime is 11111222111047. The reversal of 11111222111010 is 1011122211111.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2992935 + ... + 5583914.

It is an arithmetic number, because the mean of its divisors is an integer number (247013280000).

Almost surely, 2^{11111222111010} is an apocalyptic number.

11111222111010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11111222111010 is an abundant number, since it is smaller than the sum of its proper divisors (20506477728990).

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

11111222111010 is a wasteful number, since it uses less digits than its factorization.

11111222111010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8577096.

The product of its (nonzero) digits is 8, while the sum is 15.

Adding to 11111222111010 its reverse (1011122211111), we get a palindrome (12122344322121).

The spelling of 11111222111010 in words is "eleven trillion, one hundred eleven billion, two hundred twenty-two million, one hundred eleven thousand, ten".