11222212231 has 8 divisors (see below), whose sum is σ = 12064193280. Its totient is φ = 10405365048.

The previous prime is 11222212223. The next prime is 11222212241. The reversal of 11222212231 is 13221222211.

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

It is not a de Polignac number, because 11222212231 - 2³ = 11222212223 is a prime.

It is a super-2 number, since 2×11222212231² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11222212199 and 11222212208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11222212241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6282541 + ... + 6284326.

It is an arithmetic number, because the mean of its divisors is an integer number (1508024160).

Almost surely, 2^11222212231 is an apocalyptic number.

11222212231 is a deficient number, since it is larger than the sum of its proper divisors (841981049).

11222212231 is a wasteful number, since it uses less digits than its factorization.

11222212231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12566933.

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

Adding to 11222212231 its reverse (13221222211), we get a palindrome (24443434442).

The spelling of 11222212231 in words is "eleven billion, two hundred twenty-two million, two hundred twelve thousand, two hundred thirty-one".