111101212043 has 4 divisors (see below), whose sum is σ = 111102104208. Its totient is φ = 111100319880.

The previous prime is 111101211997. The next prime is 111101212049. The reversal of 111101212043 is 340212101111.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 340212101111 = 280949 ⋅1210939.

It is a cyclic number.

It is not a de Polignac number, because 111101212043 - 2²² = 111097017739 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111101212049) 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, 221648 + ... + 520893.

It is an arithmetic number, because the mean of its divisors is an integer number (27775526052).

Almost surely, 2^111101212043 is an apocalyptic number.

111101212043 is a deficient number, since it is larger than the sum of its proper divisors (892165).

111101212043 is an equidigital number, since it uses as much as digits as its factorization.

111101212043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 892164.

The product of its (nonzero) digits is 48, while the sum is 17.

Adding to 111101212043 its reverse (340212101111), we get a palindrome (451313313154).

The spelling of 111101212043 in words is "one hundred eleven billion, one hundred one million, two hundred twelve thousand, forty-three".