104220501421 has 2 divisors, whose sum is σ = 104220501422. Its totient is φ = 104220501420.

The previous prime is 104220501299. The next prime is 104220501493. The reversal of 104220501421 is 124105022401.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 67706642025 + 36513859396 = 260205^2 + 191086^2 .

It is a cyclic number.

It is not a de Polignac number, because 104220501421 - 2¹⁹ = 104219977133 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 104220501392 and 104220501401.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (104220501821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52110250710 + 52110250711.

It is an arithmetic number, because the mean of its divisors is an integer number (52110250711).

Almost surely, 2^104220501421 is an apocalyptic number.

It is an amenable number.

104220501421 is a deficient number, since it is larger than the sum of its proper divisors (1).

104220501421 is an equidigital number, since it uses as much as digits as its factorization.

104220501421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 640, while the sum is 22.

Adding to 104220501421 its reverse (124105022401), we get a palindrome (228325523822).

The spelling of 104220501421 in words is "one hundred four billion, two hundred twenty million, five hundred one thousand, four hundred twenty-one".