111222255257 has 4 divisors (see below), whose sum is σ = 111435734196. Its totient is φ = 111008776320.

The previous prime is 111222255211. The next prime is 111222255259. The reversal of 111222255257 is 752552222111.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 752552222111 = 3229 ⋅233060459.

It can be written as a sum of positive squares in 2 ways, for example, as 82449953881 + 28772301376 = 287141^2 + 169624^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-111222255257 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111222255259) 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, 106738688 + ... + 106739729.

It is an arithmetic number, because the mean of its divisors is an integer number (27858933549).

Almost surely, 2^111222255257 is an apocalyptic number.

It is an amenable number.

111222255257 is a deficient number, since it is larger than the sum of its proper divisors (213478939).

111222255257 is an equidigital number, since it uses as much as digits as its factorization.

111222255257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 213478938.

The product of its digits is 28000, while the sum is 35.

Adding to 111222255257 its reverse (752552222111), we get a palindrome (863774477368).

The spelling of 111222255257 in words is "one hundred eleven billion, two hundred twenty-two million, two hundred fifty-five thousand, two hundred fifty-seven".