11222220231 has 12 divisors (see below), whose sum is σ = 16242106608. Its totient is φ = 7466603424.

The previous prime is 11222220227. The next prime is 11222220239. The reversal of 11222220231 is 13202222211.

It is not a de Polignac number, because 11222220231 - 2² = 11222220227 is a prime.

It is a super-2 number, since 2×11222220231² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11222220239) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1234950 + ... + 1244003.

It is an arithmetic number, because the mean of its divisors is an integer number (1353508884).

Almost surely, 2^11222220231 is an apocalyptic number.

11222220231 is a deficient number, since it is larger than the sum of its proper divisors (5019886377).

11222220231 is a wasteful number, since it uses less digits than its factorization.

11222220231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2479462 (or 2479459 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 11222220231 its reverse (13202222211), we get a palindrome (24424442442).

The spelling of 11222220231 in words is "eleven billion, two hundred twenty-two million, two hundred twenty thousand, two hundred thirty-one".