111141443221 has 2 divisors, whose sum is σ = 111141443222. Its totient is φ = 111141443220.

The previous prime is 111141443213. The next prime is 111141443251. The reversal of 111141443221 is 122344141111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 107921448196 + 3219995025 = 328514^2 + 56745^2 .

It is a cyclic number.

It is not a de Polignac number, because 111141443221 - 2³ = 111141443213 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111141443251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55570721610 + 55570721611.

It is an arithmetic number, because the mean of its divisors is an integer number (55570721611).

Almost surely, 2^111141443221 is an apocalyptic number.

It is an amenable number.

111141443221 is a deficient number, since it is larger than the sum of its proper divisors (1).

111141443221 is an equidigital number, since it uses as much as digits as its factorization.

111141443221 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 768, while the sum is 25.

Adding to 111141443221 its reverse (122344141111), we get a palindrome (233485584332).

The spelling of 111141443221 in words is "one hundred eleven billion, one hundred forty-one million, four hundred forty-three thousand, two hundred twenty-one".