111442024021 has 2 divisors, whose sum is σ = 111442024022. Its totient is φ = 111442024020.

The previous prime is 111442024007. The next prime is 111442024049. The reversal of 111442024021 is 120420244111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 99153192996 + 12288831025 = 314886^2 + 110855^2 .

It is an emirp because it is prime and its reverse (120420244111) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 111442024021 - 2⁵ = 111442023989 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 111442023983 and 111442024001.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111442024081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55721012010 + 55721012011.

It is an arithmetic number, because the mean of its divisors is an integer number (55721012011).

Almost surely, 2^111442024021 is an apocalyptic number.

It is an amenable number.

111442024021 is a deficient number, since it is larger than the sum of its proper divisors (1).

111442024021 is an equidigital number, since it uses as much as digits as its factorization.

111442024021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 512, while the sum is 22.

Adding to 111442024021 its reverse (120420244111), we get a palindrome (231862268132).

The spelling of 111442024021 in words is "one hundred eleven billion, four hundred forty-two million, twenty-four thousand, twenty-one".