222201111311 has 4 divisors (see below), whose sum is σ = 222222149712. Its totient is φ = 222180072912.

The previous prime is 222201111257. The next prime is 222201111337. The reversal of 222201111311 is 113111102222.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-222201111311 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 222201111311.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222201110311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10503350 + ... + 10524483.

It is an arithmetic number, because the mean of its divisors is an integer number (55555537428).

Almost surely, 2^222201111311 is an apocalyptic number.

222201111311 is a deficient number, since it is larger than the sum of its proper divisors (21038401).

222201111311 is a wasteful number, since it uses less digits than its factorization.

222201111311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21038400.

The product of its (nonzero) digits is 48, while the sum is 17.

Adding to 222201111311 its reverse (113111102222), we get a palindrome (335312213533).

It can be divided in two parts, 2222011 and 11311, that added together give a palindrome (2233322).

The spelling of 222201111311 in words is "two hundred twenty-two billion, two hundred one million, one hundred eleven thousand, three hundred eleven".