20213321033 has 2 divisors, whose sum is σ = 20213321034. Its totient is φ = 20213321032.

The previous prime is 20213320987. The next prime is 20213321069. The reversal of 20213321033 is 33012331202.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20110643344 + 102677689 = 141812^2 + 10133^2 .

It is a cyclic number.

It is not a de Polignac number, because 20213321033 - 2¹⁴ = 20213304649 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20213320996 and 20213321014.

It is not a weakly prime, because it can be changed into another prime (20213329033) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10106660516 + 10106660517.

It is an arithmetic number, because the mean of its divisors is an integer number (10106660517).

Almost surely, 2^20213321033 is an apocalyptic number.

It is an amenable number.

20213321033 is a deficient number, since it is larger than the sum of its proper divisors (1).

20213321033 is an equidigital number, since it uses as much as digits as its factorization.

20213321033 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 648, while the sum is 20.

Adding to 20213321033 its reverse (33012331202), we get a palindrome (53225652235).

The spelling of 20213321033 in words is "twenty billion, two hundred thirteen million, three hundred twenty-one thousand, thirty-three".