20193833321 has 2 divisors, whose sum is σ = 20193833322. Its totient is φ = 20193833320.

The previous prime is 20193833293. The next prime is 20193833357. The reversal of 20193833321 is 12333839102.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17172792025 + 3021041296 = 131045^2 + 54964^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20193833321 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 (20193833381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10096916660 + 10096916661.

It is an arithmetic number, because the mean of its divisors is an integer number (10096916661).

Almost surely, 2^20193833321 is an apocalyptic number.

It is an amenable number.

20193833321 is a deficient number, since it is larger than the sum of its proper divisors (1).

20193833321 is an equidigital number, since it uses as much as digits as its factorization.

20193833321 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 23328, while the sum is 35.

The spelling of 20193833321 in words is "twenty billion, one hundred ninety-three million, eight hundred thirty-three thousand, three hundred twenty-one".