111212144343 has 8 divisors (see below), whose sum is σ = 164758732400. Its totient is φ = 74141429544.

The previous prime is 111212144321. The next prime is 111212144353. The reversal of 111212144343 is 343441212111.

It is a happy number.

111212144343 is a `hidden beast` number, since 1 + 1 + 1 + 212 + 1 + 443 + 4 + 3 = 666.

It is not a de Polignac number, because 111212144343 - 2⁹ = 111212143831 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 4118968309 = 111212144343 / (1 + 1 + 1 + 2 + 1 + 2 + 1 + 4 + 4 + 3 + 4 + 3).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111212144353) 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, 2059484128 + ... + 2059484181.

It is an arithmetic number, because the mean of its divisors is an integer number (20594841550).

Almost surely, 2^111212144343 is an apocalyptic number.

111212144343 is a deficient number, since it is larger than the sum of its proper divisors (53546588057).

111212144343 is an equidigital number, since it uses as much as digits as its factorization.

111212144343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4118968318 (or 4118968312 counting only the distinct ones).

The product of its digits is 2304, while the sum is 27.

Adding to 111212144343 its reverse (343441212111), we get a palindrome (454653356454).

The spelling of 111212144343 in words is "one hundred eleven billion, two hundred twelve million, one hundred forty-four thousand, three hundred forty-three".