2104933921 has 2 divisors, whose sum is σ = 2104933922. Its totient is φ = 2104933920.

The previous prime is 2104933861. The next prime is 2104933937. The reversal of 2104933921 is 1293394012.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1261670400 + 843263521 = 35520^2 + 29039^2 .

It is a cyclic number.

It is not a de Polignac number, because 2104933921 - 2⁹ = 2104933409 is a prime.

It is not a weakly prime, because it can be changed into another prime (2104933121) 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, 1052466960 + 1052466961.

It is an arithmetic number, because the mean of its divisors is an integer number (1052466961).

Almost surely, 2^2104933921 is an apocalyptic number.

It is an amenable number.

2104933921 is a deficient number, since it is larger than the sum of its proper divisors (1).

2104933921 is an equidigital number, since it uses as much as digits as its factorization.

2104933921 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11664, while the sum is 34.

The square root of 2104933921 is about 45879.5588579489. The cubic root of 2104933921 is about 1281.5812815984.

The spelling of 2104933921 in words is "two billion, one hundred four million, nine hundred thirty-three thousand, nine hundred twenty-one".