111212131423243 has 8 divisors (see below), whose sum is σ = 115792239197376. Its totient is φ = 106720957780800.

The previous prime is 111212131423241. The next prime is 111212131423277. The reversal of 111212131423243 is 342324131212111.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 111212131423243 - 2¹ = 111212131423241 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111212131423241) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22233530371 + ... + 22233535372.

It is an arithmetic number, because the mean of its divisors is an integer number (14474029899672).

Almost surely, 2^{111212131423243} is an apocalyptic number.

111212131423243 is a deficient number, since it is larger than the sum of its proper divisors (4580107774133).

111212131423243 is an equidigital number, since it uses as much as digits as its factorization.

111212131423243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44467065845.

The product of its digits is 6912, while the sum is 31.

Adding to 111212131423243 its reverse (342324131212111), we get a palindrome (453536262635354).

The spelling of 111212131423243 in words is "one hundred eleven trillion, two hundred twelve billion, one hundred thirty-one million, four hundred twenty-three thousand, two hundred forty-three".