2104021207 has 2 divisors, whose sum is σ = 2104021208. Its totient is φ = 2104021206.

The previous prime is 2104021151. The next prime is 2104021237. The reversal of 2104021207 is 7021204012.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2104021207 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2104021237) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1052010603 + 1052010604.

It is an arithmetic number, because the mean of its divisors is an integer number (1052010604).

Almost surely, 2^2104021207 is an apocalyptic number.

2104021207 is a deficient number, since it is larger than the sum of its proper divisors (1).

2104021207 is an equidigital number, since it uses as much as digits as its factorization.

2104021207 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 224, while the sum is 19.

The square root of 2104021207 is about 45869.6109314217. The cubic root of 2104021207 is about 1281.3960206308.

Adding to 2104021207 its reverse (7021204012), we get a palindrome (9125225219).

The spelling of 2104021207 in words is "two billion, one hundred four million, twenty-one thousand, two hundred seven".