33221020213009 has 2 divisors, whose sum is σ = 33221020213010. Its totient is φ = 33221020213008.

The previous prime is 33221020212997. The next prime is 33221020213039. The reversal of 33221020213009 is 90031202012233.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 32796238240000 + 424781973009 = 5726800^2 + 651753^2 .

It is a cyclic number.

It is not a de Polignac number, because 33221020213009 - 2⁷ = 33221020212881 is a prime.

It is a super-2 number, since 2×33221020213009² (a number of 28 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (33221020213039) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16610510106504 + 16610510106505.

It is an arithmetic number, because the mean of its divisors is an integer number (16610510106505).

Almost surely, 2^{33221020213009} is an apocalyptic number.

It is an amenable number.

33221020213009 is a deficient number, since it is larger than the sum of its proper divisors (1).

33221020213009 is an equidigital number, since it uses as much as digits as its factorization.

33221020213009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3888, while the sum is 28.

The spelling of 33221020213009 in words is "thirty-three trillion, two hundred twenty-one billion, twenty million, two hundred thirteen thousand, nine".