20312201033 has 2 divisors, whose sum is σ = 20312201034. Its totient is φ = 20312201032.

The previous prime is 20312201011. The next prime is 20312201111. The reversal of 20312201033 is 33010221302.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20109508864 + 202692169 = 141808^2 + 14237^2 .

It is a cyclic number.

It is not a de Polignac number, because 20312201033 - 2¹² = 20312196937 is a prime.

It is not a weakly prime, because it can be changed into another prime (20312201003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10156100516 + 10156100517.

It is an arithmetic number, because the mean of its divisors is an integer number (10156100517).

Almost surely, 2^20312201033 is an apocalyptic number.

It is an amenable number.

20312201033 is a deficient number, since it is larger than the sum of its proper divisors (1).

20312201033 is an equidigital number, since it uses as much as digits as its factorization.

20312201033 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 216, while the sum is 17.

Adding to 20312201033 its reverse (33010221302), we get a palindrome (53322422335).

The spelling of 20312201033 in words is "twenty billion, three hundred twelve million, two hundred one thousand, thirty-three".