33232130312221 has 2 divisors, whose sum is σ = 33232130312222. Its totient is φ = 33232130312220.

The previous prime is 33232130312219. The next prime is 33232130312237. The reversal of 33232130312221 is 12221303123233.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 25817069102500 + 7415061209721 = 5081050^2 + 2723061^2 .

It is a cyclic number.

It is not a de Polignac number, because 33232130312221 - 2¹ = 33232130312219 is a prime.

It is a super-2 number, since 2×33232130312221² (a number of 28 digits) contains 22 as substring.

Together with 33232130312219, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 33232130312221.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (33232130312281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16616065156110 + 16616065156111.

It is an arithmetic number, because the mean of its divisors is an integer number (16616065156111).

Almost surely, 2^{33232130312221} is an apocalyptic number.

It is an amenable number.

33232130312221 is a deficient number, since it is larger than the sum of its proper divisors (1).

33232130312221 is an equidigital number, since it uses as much as digits as its factorization.

33232130312221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7776, while the sum is 28.

Adding to 33232130312221 its reverse (12221303123233), we get a palindrome (45453433435454).

The spelling of 33232130312221 in words is "thirty-three trillion, two hundred thirty-two billion, one hundred thirty million, three hundred twelve thousand, two hundred twenty-one".