2104063921 has 2 divisors, whose sum is σ = 2104063922. Its totient is φ = 2104063920.

The previous prime is 2104063891. The next prime is 2104063963. The reversal of 2104063921 is 1293604012.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1436410000 + 667653921 = 37900^2 + 25839^2 .

It is a cyclic number.

It is not a de Polignac number, because 2104063921 - 2¹³ = 2104055729 is a prime.

It is a super-3 number, since 3×2104063921³ (a number of 29 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2104063921.

It is not a weakly prime, because it can be changed into another prime (2104063981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1052031960 + 1052031961.

It is an arithmetic number, because the mean of its divisors is an integer number (1052031961).

Almost surely, 2^2104063921 is an apocalyptic number.

It is an amenable number.

2104063921 is a deficient number, since it is larger than the sum of its proper divisors (1).

2104063921 is an equidigital number, since it uses as much as digits as its factorization.

2104063921 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 2104063921 is about 45870.0765314382. The cubic root of 2104063921 is about 1281.4046918329.

Adding to 2104063921 its reverse (1293604012), we get a palindrome (3397667933).

The spelling of 2104063921 in words is "two billion, one hundred four million, sixty-three thousand, nine hundred twenty-one".