11221100122011 has 64 divisors (see below), whose sum is σ = 16360526582400. Its totient is φ = 6799844007936.

The previous prime is 11221100122007. The next prime is 11221100122039. The reversal of 11221100122011 is 11022100112211.

It is a happy number.

It is not a de Polignac number, because 11221100122011 - 2² = 11221100122007 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11221100122051) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 454117725 + ... + 454142433.

It is an arithmetic number, because the mean of its divisors is an integer number (255633227850).

Almost surely, 2^{11221100122011} is an apocalyptic number.

11221100122011 is a deficient number, since it is larger than the sum of its proper divisors (5139426460389).

11221100122011 is a wasteful number, since it uses less digits than its factorization.

11221100122011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25488.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 11221100122011 its reverse (11022100112211), we get a palindrome (22243200234222).

The spelling of 11221100122011 in words is "eleven trillion, two hundred twenty-one billion, one hundred million, one hundred twenty-two thousand, eleven".