104421421221 has 16 divisors (see below), whose sum is σ = 150468284736. Its totient is φ = 64032264576.

The previous prime is 104421421219. The next prime is 104421421283. The reversal of 104421421221 is 122124124401.

It is a happy number.

It is not a de Polignac number, because 104421421221 - 2¹ = 104421421219 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 104421421191 and 104421421200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (104421421211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4719480 + ... + 4741553.

It is an arithmetic number, because the mean of its divisors is an integer number (9404267796).

Almost surely, 2^104421421221 is an apocalyptic number.

It is an amenable number.

104421421221 is a deficient number, since it is larger than the sum of its proper divisors (46046863515).

104421421221 is a wasteful number, since it uses less digits than its factorization.

104421421221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9461332.

The product of its (nonzero) digits is 1024, while the sum is 24.

Adding to 104421421221 its reverse (122124124401), we get a palindrome (226545545622).

The spelling of 104421421221 in words is "one hundred four billion, four hundred twenty-one million, four hundred twenty-one thousand, two hundred twenty-one".