11101222011 has 32 divisors (see below), whose sum is σ = 17059507200. Its totient is φ = 6357774080.

The previous prime is 11101222009. The next prime is 11101222031. The reversal of 11101222011 is 11022210111.

It is a cyclic number.

It is not a de Polignac number, because 11101222011 - 2¹ = 11101222009 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11101222001) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 78426 + ... + 168383.

It is an arithmetic number, because the mean of its divisors is an integer number (533109600).

Almost surely, 2^11101222011 is an apocalyptic number.

11101222011 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

11101222011 is a deficient number, since it is larger than the sum of its proper divisors (5958285189).

11101222011 is a wasteful number, since it uses less digits than its factorization.

11101222011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 246899.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 11101222011 its reverse (11022210111), we get a palindrome (22123432122).

The spelling of 11101222011 in words is "eleven billion, one hundred one million, two hundred twenty-two thousand, eleven".