111211302112223 has 4 divisors (see below), whose sum is σ = 117753143412960. Its totient is φ = 104669460811488.

The previous prime is 111211302112219. The next prime is 111211302112231. The reversal of 111211302112223 is 322211203112111.

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 111211302112223 - 2² = 111211302112219 is a prime.

It is a super-2 number, since 2×111211302112223² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111211302112243) 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, 3270920650343 + ... + 3270920650376.

It is an arithmetic number, because the mean of its divisors is an integer number (29438285853240).

Almost surely, 2^{111211302112223} is an apocalyptic number.

111211302112223 is a deficient number, since it is larger than the sum of its proper divisors (6541841300737).

111211302112223 is an equidigital number, since it uses as much as digits as its factorization.

111211302112223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6541841300736.

The product of its (nonzero) digits is 288, while the sum is 23.

Adding to 111211302112223 its reverse (322211203112111), we get a palindrome (433422505224334).

The spelling of 111211302112223 in words is "one hundred eleven trillion, two hundred eleven billion, three hundred two million, one hundred twelve thousand, two hundred twenty-three".