11222122111001 has 4 divisors (see below), whose sum is σ = 11262635187492. Its totient is φ = 11181609034512.

The previous prime is 11222122110989. The next prime is 11222122111009. The reversal of 11222122111001 is 10011122122211.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 6058115832976 + 5164006278025 = 2461324^2 + 2272445^2 .

It is a cyclic number.

It is not a de Polignac number, because 11222122111001 - 2³⁰ = 11221048369177 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11222122111009) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20256537830 + ... + 20256538383.

It is an arithmetic number, because the mean of its divisors is an integer number (2815658796873).

Almost surely, 2^{11222122111001} is an apocalyptic number.

It is an amenable number.

11222122111001 is a deficient number, since it is larger than the sum of its proper divisors (40513076491).

11222122111001 is an equidigital number, since it uses as much as digits as its factorization.

11222122111001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40513076490.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 11222122111001 its reverse (10011122122211), we get a palindrome (21233244233212).

The spelling of 11222122111001 in words is "eleven trillion, two hundred twenty-two billion, one hundred twenty-two million, one hundred eleven thousand, one".