11202222211111 has 4 divisors (see below), whose sum is σ = 11228957825400. Its totient is φ = 11175486596824.

The previous prime is 11202222211093. The next prime is 11202222211133. The reversal of 11202222211111 is 11111222220211.

It is a happy number.

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 11202222211111 - 2¹⁷ = 11202222080039 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11202222211171) 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, 13367806516 + ... + 13367807353.

It is an arithmetic number, because the mean of its divisors is an integer number (2807239456350).

Almost surely, 2^{11202222211111} is an apocalyptic number.

11202222211111 is a deficient number, since it is larger than the sum of its proper divisors (26735614289).

11202222211111 is an equidigital number, since it uses as much as digits as its factorization.

11202222211111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26735614288.

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

Adding to 11202222211111 its reverse (11111222220211), we get a palindrome (22313444431322).

It can be divided in two parts, 1120222 and 2211111, that added together give a palindrome (3331333).

The spelling of 11202222211111 in words is "eleven trillion, two hundred two billion, two hundred twenty-two million, two hundred eleven thousand, one hundred eleven".