133003323221 has 2 divisors, whose sum is σ = 133003323222. Its totient is φ = 133003323220.

The previous prime is 133003323217. The next prime is 133003323293. The reversal of 133003323221 is 122323300331.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 99549084196 + 33454239025 = 315514^2 + 182905^2 .

It is a cyclic number.

It is not a de Polignac number, because 133003323221 - 2² = 133003323217 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (133003313221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66501661610 + 66501661611.

It is an arithmetic number, because the mean of its divisors is an integer number (66501661611).

Almost surely, 2^133003323221 is an apocalyptic number.

It is an amenable number.

133003323221 is a deficient number, since it is larger than the sum of its proper divisors (1).

133003323221 is an equidigital number, since it uses as much as digits as its factorization.

133003323221 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 133003323221 its reverse (122323300331), we get a palindrome (255326623552).

The spelling of 133003323221 in words is "one hundred thirty-three billion, three million, three hundred twenty-three thousand, two hundred twenty-one".