33021220163 has 2 divisors, whose sum is σ = 33021220164. Its totient is φ = 33021220162.

The previous prime is 33021220109. The next prime is 33021220201. The reversal of 33021220163 is 36102212033.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 33021220163 - 2²⁶ = 32954111299 is a prime.

It is not a weakly prime, because it can be changed into another prime (33021220363) 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, 16510610081 + 16510610082.

It is an arithmetic number, because the mean of its divisors is an integer number (16510610082).

Almost surely, 2^33021220163 is an apocalyptic number.

33021220163 is a deficient number, since it is larger than the sum of its proper divisors (1).

33021220163 is an equidigital number, since it uses as much as digits as its factorization.

33021220163 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1296, while the sum is 23.

Adding to 33021220163 its reverse (36102212033), we get a palindrome (69123432196).

The spelling of 33021220163 in words is "thirty-three billion, twenty-one million, two hundred twenty thousand, one hundred sixty-three".