2102001221063 has 2 divisors, whose sum is σ = 2102001221064. Its totient is φ = 2102001221062.

The previous prime is 2102001221039. The next prime is 2102001221113. The reversal of 2102001221063 is 3601221002012.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2102001221063 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2102001221003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1051000610531 + 1051000610532.

It is an arithmetic number, because the mean of its divisors is an integer number (1051000610532).

Almost surely, 2^{2102001221063} is an apocalyptic number.

2102001221063 is a deficient number, since it is larger than the sum of its proper divisors (1).

2102001221063 is an equidigital number, since it uses as much as digits as its factorization.

2102001221063 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 2102001221063 its reverse (3601221002012), we get a palindrome (5703222223075).

The spelling of 2102001221063 in words is "two trillion, one hundred two billion, one million, two hundred twenty-one thousand, sixty-three".