11222122211 has 8 divisors (see below), whose sum is σ = 11717551104. Its totient is φ = 10727319240.

The previous prime is 11222122207. The next prime is 11222122213.

11222122211 is nontrivially palindromic in base 10.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11222122211 - 2² = 11222122207 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11222122211.

It is not an unprimeable number, because it can be changed into a prime (11222122213) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 119645 + ... + 191726.

It is an arithmetic number, because the mean of its divisors is an integer number (1464693888).

Almost surely, 2^11222122211 is an apocalyptic number.

11222122211 is a deficient number, since it is larger than the sum of its proper divisors (495428893).

11222122211 is a wasteful number, since it uses less digits than its factorization.

11222122211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 312961.

The product of its digits is 64, while the sum is 17.

The spelling of 11222122211 in words is "eleven billion, two hundred twenty-two million, one hundred twenty-two thousand, two hundred eleven".