11222122201111 has 8 divisors (see below), whose sum is σ = 11225545130240. Its totient is φ = 11218699500408.

The previous prime is 11222122201097. The next prime is 11222122201123. The reversal of 11222122201111 is 11110222122211.

It is a happy number.

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 11222122201111 - 2⁵ = 11222122201079 is a prime.

It is a super-3 number, since 3×11222122201111³ (a number of 40 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11222122201181) 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, 182066680 + ... + 182128306.

It is an arithmetic number, because the mean of its divisors is an integer number (1403193141280).

Almost surely, 2^{11222122201111} is an apocalyptic number.

11222122201111 is a deficient number, since it is larger than the sum of its proper divisors (3422929129).

11222122201111 is an equidigital number, since it uses as much as digits as its factorization.

11222122201111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114213.

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 11222122201111 its reverse (11110222122211), we get a palindrome (22332344323322).

The spelling of 11222122201111 in words is "eleven trillion, two hundred twenty-two billion, one hundred twenty-two million, two hundred one thousand, one hundred eleven".