2021011793 has 2 divisors, whose sum is σ = 2021011794. Its totient is φ = 2021011792.

The previous prime is 2021011787. The next prime is 2021011819. The reversal of 2021011793 is 3971101202.

It is an a-pointer prime, because the next prime (2021011819) can be obtained adding 2021011793 to its sum of digits (26).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1063542544 + 957469249 = 32612^2 + 30943^2 .

It is a cyclic number.

It is not a de Polignac number, because 2021011793 - 2¹⁰ = 2021010769 is a prime.

It is not a weakly prime, because it can be changed into another prime (2021011693) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1010505896 + 1010505897.

It is an arithmetic number, because the mean of its divisors is an integer number (1010505897).

Almost surely, 2^2021011793 is an apocalyptic number.

It is an amenable number.

2021011793 is a deficient number, since it is larger than the sum of its proper divisors (1).

2021011793 is an equidigital number, since it uses as much as digits as its factorization.

2021011793 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 756, while the sum is 26.

The square root of 2021011793 is about 44955.6647487277. The cubic root of 2021011793 is about 1264.3178881288.

Adding to 2021011793 its reverse (3971101202), we get a palindrome (5992112995).

The spelling of 2021011793 in words is "two billion, twenty-one million, eleven thousand, seven hundred ninety-three".