20021011033 has 2 divisors, whose sum is σ = 20021011034. Its totient is φ = 20021011032.

The previous prime is 20021011019. The next prime is 20021011051. The reversal of 20021011033 is 33011012002.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18557795529 + 1463215504 = 136227^2 + 38252^2 .

It is a cyclic number.

It is not a de Polignac number, because 20021011033 - 2⁹ = 20021010521 is a prime.

It is not a weakly prime, because it can be changed into another prime (20021017033) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10010505516 + 10010505517.

It is an arithmetic number, because the mean of its divisors is an integer number (10010505517).

Almost surely, 2^20021011033 is an apocalyptic number.

It is an amenable number.

20021011033 is a deficient number, since it is larger than the sum of its proper divisors (1).

20021011033 is an equidigital number, since it uses as much as digits as its factorization.

20021011033 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36, while the sum is 13.

Adding to 20021011033 its reverse (33011012002), we get a palindrome (53032023035).

The spelling of 20021011033 in words is "twenty billion, twenty-one million, eleven thousand, thirty-three".