20401333033 has 2 divisors, whose sum is σ = 20401333034. Its totient is φ = 20401333032.

The previous prime is 20401332997. The next prime is 20401333061. The reversal of 20401333033 is 33033310402.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18899925529 + 1501407504 = 137477^2 + 38748^2 .

It is a cyclic number.

It is not a de Polignac number, because 20401333033 - 2²¹ = 20399235881 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20401332995 and 20401333013.

It is not a weakly prime, because it can be changed into another prime (20401333093) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10200666516 + 10200666517.

It is an arithmetic number, because the mean of its divisors is an integer number (10200666517).

Almost surely, 2^20401333033 is an apocalyptic number.

It is an amenable number.

20401333033 is a deficient number, since it is larger than the sum of its proper divisors (1).

20401333033 is an equidigital number, since it uses as much as digits as its factorization.

20401333033 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1944, while the sum is 22.

Adding to 20401333033 its reverse (33033310402), we get a palindrome (53434643435).

The spelling of 20401333033 in words is "twenty billion, four hundred one million, three hundred thirty-three thousand, thirty-three".