20213332133 has 2 divisors, whose sum is σ = 20213332134. Its totient is φ = 20213332132.

The previous prime is 20213332109. The next prime is 20213332151. The reversal of 20213332133 is 33123331202.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11772684004 + 8440648129 = 108502^2 + 91873^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20213332133 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20213332099 and 20213332108.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20213331133) 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, 10106666066 + 10106666067.

It is an arithmetic number, because the mean of its divisors is an integer number (10106666067).

Almost surely, 2^20213332133 is an apocalyptic number.

It is an amenable number.

20213332133 is a deficient number, since it is larger than the sum of its proper divisors (1).

20213332133 is an equidigital number, since it uses as much as digits as its factorization.

20213332133 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1944, while the sum is 23.

Adding to 20213332133 its reverse (33123331202), we get a palindrome (53336663335).

The spelling of 20213332133 in words is "twenty billion, two hundred thirteen million, three hundred thirty-two thousand, one hundred thirty-three".