11111112221110 has 32 divisors (see below), whose sum is σ = 21914299395072. Its totient is φ = 4022605296480.

The previous prime is 11111112221057. The next prime is 11111112221161. The reversal of 11111112221110 is 1112221111111.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 222464262 + ... + 222514201.

It is an arithmetic number, because the mean of its divisors is an integer number (684821856096).

Almost surely, 2^{11111112221110} is an apocalyptic number.

11111112221110 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11111112221110 is a deficient number, since it is larger than the sum of its proper divisors (10803187173962).

11111112221110 is a wasteful number, since it uses less digits than its factorization.

11111112221110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 444978708.

The product of its (nonzero) digits is 8, while the sum is 16.

Adding to 11111112221110 its reverse (1112221111111), we get a palindrome (12223333332221).

The spelling of 11111112221110 in words is "eleven trillion, one hundred eleven billion, one hundred twelve million, two hundred twenty-one thousand, one hundred ten".