20002201012649 has 2 divisors, whose sum is σ = 20002201012650. Its totient is φ = 20002201012648.

The previous prime is 20002201012627. The next prime is 20002201012657. The reversal of 20002201012649 is 94621010220002.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13752860995225 + 6249340017424 = 3708485^2 + 2499868^2 .

It is a cyclic number.

It is not a de Polignac number, because 20002201012649 - 2⁸ = 20002201012393 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (20002201012679) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10001100506324 + 10001100506325.

It is an arithmetic number, because the mean of its divisors is an integer number (10001100506325).

Almost surely, 2^{20002201012649} is an apocalyptic number.

It is an amenable number.

20002201012649 is a deficient number, since it is larger than the sum of its proper divisors (1).

20002201012649 is an equidigital number, since it uses as much as digits as its factorization.

20002201012649 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3456, while the sum is 29.

The spelling of 20002201012649 in words is "twenty trillion, two billion, two hundred one million, twelve thousand, six hundred forty-nine".