13220312033 has 2 divisors, whose sum is σ = 13220312034. Its totient is φ = 13220312032.

The previous prime is 13220312029. The next prime is 13220312129. The reversal of 13220312033 is 33021302231.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9940688209 + 3279623824 = 99703^2 + 57268^2 .

It is a cyclic number.

It is not a de Polignac number, because 13220312033 - 2² = 13220312029 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 13220311996 and 13220312014.

It is not a weakly prime, because it can be changed into another prime (13220312003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6610156016 + 6610156017.

It is an arithmetic number, because the mean of its divisors is an integer number (6610156017).

Almost surely, 2^13220312033 is an apocalyptic number.

It is an amenable number.

13220312033 is a deficient number, since it is larger than the sum of its proper divisors (1).

13220312033 is an equidigital number, since it uses as much as digits as its factorization.

13220312033 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 648, while the sum is 20.

Adding to 13220312033 its reverse (33021302231), we get a palindrome (46241614264).

The spelling of 13220312033 in words is "thirteen billion, two hundred twenty million, three hundred twelve thousand, thirty-three".