111122222011 has 16 divisors (see below), whose sum is σ = 120230645760. Its totient is φ = 102387244960.

The previous prime is 111122221999. The next prime is 111122222111. The reversal of 111122222011 is 110222221111.

It is a cyclic number.

It is not a de Polignac number, because 111122222011 - 2²⁵ = 111088667579 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111122222111) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 94206 + ... + 480748.

It is an arithmetic number, because the mean of its divisors is an integer number (7514415360).

Almost surely, 2^111122222011 is an apocalyptic number.

111122222011 is a deficient number, since it is larger than the sum of its proper divisors (9108423749).

111122222011 is a wasteful number, since it uses less digits than its factorization.

111122222011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 387026.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 111122222011 its reverse (110222221111), we get a palindrome (221344443122).

The spelling of 111122222011 in words is "one hundred eleven billion, one hundred twenty-two million, two hundred twenty-two thousand, eleven".