104440403021 has 2 divisors, whose sum is σ = 104440403022. Its totient is φ = 104440403020.

The previous prime is 104440402993. The next prime is 104440403027. The reversal of 104440403021 is 120304044401.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 85782208996 + 18658194025 = 292886^2 + 136595^2 .

It is a cyclic number.

It is not a de Polignac number, because 104440403021 - 2²² = 104436208717 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (104440403027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52220201510 + 52220201511.

It is an arithmetic number, because the mean of its divisors is an integer number (52220201511).

Almost surely, 2^104440403021 is an apocalyptic number.

It is an amenable number.

104440403021 is a deficient number, since it is larger than the sum of its proper divisors (1).

104440403021 is an equidigital number, since it uses as much as digits as its factorization.

104440403021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1536, while the sum is 23.

Adding to 104440403021 its reverse (120304044401), we get a palindrome (224744447422).

The spelling of 104440403021 in words is "one hundred four billion, four hundred forty million, four hundred three thousand, twenty-one".