206850962112721 has 2 divisors, whose sum is σ = 206850962112722. Its totient is φ = 206850962112720.

The previous prime is 206850962112701. The next prime is 206850962112731. The reversal of 206850962112721 is 127211269058602.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 160286715672721 + 46564246440000 = 12660439^2 + 6823800^2 .

It is a cyclic number.

It is not a de Polignac number, because 206850962112721 - 2²¹ = 206850960015569 is a prime.

It is not a weakly prime, because it can be changed into another prime (206850962112701) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 103425481056360 + 103425481056361.

It is an arithmetic number, because the mean of its divisors is an integer number (103425481056361).

Almost surely, 2^{206850962112721} is an apocalyptic number.

It is an amenable number.

206850962112721 is a deficient number, since it is larger than the sum of its proper divisors (1).

206850962112721 is an equidigital number, since it uses as much as digits as its factorization.

206850962112721 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1451520, while the sum is 52.

The spelling of 206850962112721 in words is "two hundred six trillion, eight hundred fifty billion, nine hundred sixty-two million, one hundred twelve thousand, seven hundred twenty-one".