2100100447 has 2 divisors, whose sum is σ = 2100100448. Its totient is φ = 2100100446.

The previous prime is 2100100441. The next prime is 2100100459. The reversal of 2100100447 is 7440010012.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2100100447 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2100100441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1050050223 + 1050050224.

It is an arithmetic number, because the mean of its divisors is an integer number (1050050224).

Almost surely, 2^2100100447 is an apocalyptic number.

2100100447 is a deficient number, since it is larger than the sum of its proper divisors (1).

2100100447 is an equidigital number, since it uses as much as digits as its factorization.

2100100447 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 2100100447 is about 45826.8529030742. The cubic root of 2100100447 is about 1280.5995821755.

Adding to 2100100447 its reverse (7440010012), we get a palindrome (9540110459).

The spelling of 2100100447 in words is "two billion, one hundred million, one hundred thousand, four hundred forty-seven".