11222232211 has 4 divisors (see below), whose sum is σ = 11357439912. Its totient is φ = 11087024512.

The previous prime is 11222232179. The next prime is 11222232227. The reversal of 11222232211 is 11223222211.

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

It is a cyclic number.

It is not a de Polignac number, because 11222232211 - 2⁵ = 11222232179 is a prime.

It is a super-4 number, since 4×11222232211⁴ (a number of 41 digits) contains 4444 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11222232251) 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, 67603726 + ... + 67603891.

It is an arithmetic number, because the mean of its divisors is an integer number (2839359978).

Almost surely, 2^11222232211 is an apocalyptic number.

11222232211 is a deficient number, since it is larger than the sum of its proper divisors (135207701).

11222232211 is an equidigital number, since it uses as much as digits as its factorization.

11222232211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135207700.

The product of its digits is 192, while the sum is 19.

Adding to 11222232211 its reverse (11223222211), we get a palindrome (22445454422).

It can be divided in two parts, 11 and 222232211, that added together give a palindrome (222232222).

The spelling of 11222232211 in words is "eleven billion, two hundred twenty-two million, two hundred thirty-two thousand, two hundred eleven".