20011012033 has 2 divisors, whose sum is σ = 20011012034. Its totient is φ = 20011012032.

The previous prime is 20011012019. The next prime is 20011012037. The reversal of 20011012033 is 33021011002.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19930945329 + 80066704 = 141177^2 + 8948^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20011012033 is a prime.

It is not a weakly prime, because it can be changed into another prime (20011012037) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10005506016 + 10005506017.

It is an arithmetic number, because the mean of its divisors is an integer number (10005506017).

Almost surely, 2^20011012033 is an apocalyptic number.

It is an amenable number.

20011012033 is a deficient number, since it is larger than the sum of its proper divisors (1).

20011012033 is an equidigital number, since it uses as much as digits as its factorization.

20011012033 is an evil number, because the sum of its binary digits is even.

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

Adding to 20011012033 its reverse (33021011002), we get a palindrome (53032023035).

The spelling of 20011012033 in words is "twenty billion, eleven million, twelve thousand, thirty-three".