111443144213 has 2 divisors, whose sum is σ = 111443144214. Its totient is φ = 111443144212.

The previous prime is 111443144201. The next prime is 111443144243. The reversal of 111443144213 is 312441344111.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 99238860484 + 12204283729 = 315022^2 + 110473^2 .

It is a cyclic number.

It is not a de Polignac number, because 111443144213 - 2²⁰ = 111442095637 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111443144243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55721572106 + 55721572107.

It is an arithmetic number, because the mean of its divisors is an integer number (55721572107).

Almost surely, 2^111443144213 is an apocalyptic number.

It is an amenable number.

111443144213 is a deficient number, since it is larger than the sum of its proper divisors (1).

111443144213 is an equidigital number, since it uses as much as digits as its factorization.

111443144213 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4608, while the sum is 29.

Adding to 111443144213 its reverse (312441344111), we get a palindrome (423884488324).

The spelling of 111443144213 in words is "one hundred eleven billion, four hundred forty-three million, one hundred forty-four thousand, two hundred thirteen".