33051013232221 has 2 divisors, whose sum is σ = 33051013232222. Its totient is φ = 33051013232220.

The previous prime is 33051013232213. The next prime is 33051013232273. The reversal of 33051013232221 is 12223231015033.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 27327488104900 + 5723525127321 = 5227570^2 + 2392389^2 .

It is an emirp because it is prime and its reverse (12223231015033) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 33051013232221 - 2³ = 33051013232213 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 33051013232221.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (33051013032221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16525506616110 + 16525506616111.

It is an arithmetic number, because the mean of its divisors is an integer number (16525506616111).

Almost surely, 2^{33051013232221} is an apocalyptic number.

It is an amenable number.

33051013232221 is a deficient number, since it is larger than the sum of its proper divisors (1).

33051013232221 is an equidigital number, since it uses as much as digits as its factorization.

33051013232221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6480, while the sum is 28.

Adding to 33051013232221 its reverse (12223231015033), we get a palindrome (45274244247254).

The spelling of 33051013232221 in words is "thirty-three trillion, fifty-one billion, thirteen million, two hundred thirty-two thousand, two hundred twenty-one".