20211002743 has 2 divisors, whose sum is σ = 20211002744. Its totient is φ = 20211002742.

The previous prime is 20211002711. The next prime is 20211002797. The reversal of 20211002743 is 34720011202.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20211002743 - 2⁵ = 20211002711 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20211002243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10105501371 + 10105501372.

It is an arithmetic number, because the mean of its divisors is an integer number (10105501372).

Almost surely, 2^20211002743 is an apocalyptic number.

20211002743 is a deficient number, since it is larger than the sum of its proper divisors (1).

20211002743 is an equidigital number, since it uses as much as digits as its factorization.

20211002743 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 672, while the sum is 22.

Adding to 20211002743 its reverse (34720011202), we get a palindrome (54931013945).

The spelling of 20211002743 in words is "twenty billion, two hundred eleven million, two thousand, seven hundred forty-three".