11112222122213 has 4 divisors (see below), whose sum is σ = 11120009244960. Its totient is φ = 11104434999468.

The previous prime is 11112222122207. The next prime is 11112222122303. The reversal of 11112222122213 is 31222122221111.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 11112222122213 - 2⁶ = 11112222122149 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 (11112222122413) 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, 3893559233 + ... + 3893562086.

It is an arithmetic number, because the mean of its divisors is an integer number (2780002311240).

Almost surely, 2^{11112222122213} is an apocalyptic number.

It is an amenable number.

11112222122213 is a deficient number, since it is larger than the sum of its proper divisors (7787122747).

11112222122213 is an equidigital number, since it uses as much as digits as its factorization.

11112222122213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7787122746.

The product of its digits is 384, while the sum is 23.

Adding to 11112222122213 its reverse (31222122221111), we get a palindrome (42334344343324).

The spelling of 11112222122213 in words is "eleven trillion, one hundred twelve billion, two hundred twenty-two million, one hundred twenty-two thousand, two hundred thirteen".