2104010221 has 2 divisors, whose sum is σ = 2104010222. Its totient is φ = 2104010220.

The previous prime is 2104010197. The next prime is 2104010273. The reversal of 2104010221 is 1220104012.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1104565225 + 999444996 = 33235^2 + 31614^2 .

It is a cyclic number.

It is not a de Polignac number, because 2104010221 - 2⁵ = 2104010189 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2104010621) 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, 1052005110 + 1052005111.

It is an arithmetic number, because the mean of its divisors is an integer number (1052005111).

Almost surely, 2^2104010221 is an apocalyptic number.

It is an amenable number.

2104010221 is a deficient number, since it is larger than the sum of its proper divisors (1).

2104010221 is an equidigital number, since it uses as much as digits as its factorization.

2104010221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 32, while the sum is 13.

The square root of 2104010221 is about 45869.4911787781. The cubic root of 2104010221 is about 1281.3937903870.

Adding to 2104010221 its reverse (1220104012), we get a palindrome (3324114233).

The spelling of 2104010221 in words is "two billion, one hundred four million, ten thousand, two hundred twenty-one".