111338253281 has 4 divisors (see below), whose sum is σ = 111356508564. Its totient is φ = 111319998000.

The previous prime is 111338253259. The next prime is 111338253307. The reversal of 111338253281 is 182352833111.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 73975296256 + 37362957025 = 271984^2 + 193295^2 .

It is a cyclic number.

It is not a de Polignac number, because 111338253281 - 2¹⁴ = 111338236897 is a prime.

It is a super-2 number, since 2×111338253281² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111338253211) 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, 9118490 + ... + 9130691.

It is an arithmetic number, because the mean of its divisors is an integer number (27839127141).

Almost surely, 2^111338253281 is an apocalyptic number.

It is an amenable number.

111338253281 is a deficient number, since it is larger than the sum of its proper divisors (18255283).

111338253281 is an equidigital number, since it uses as much as digits as its factorization.

111338253281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18255282.

The product of its digits is 34560, while the sum is 38.

The spelling of 111338253281 in words is "one hundred eleven billion, three hundred thirty-eight million, two hundred fifty-three thousand, two hundred eighty-one".