33122301221 has 2 divisors, whose sum is σ = 33122301222. Its totient is φ = 33122301220.

The previous prime is 33122301217. The next prime is 33122301229. The reversal of 33122301221 is 12210322133.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17525788225 + 15596512996 = 132385^2 + 124886^2 .

It is a cyclic number.

It is not a de Polignac number, because 33122301221 - 2² = 33122301217 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 33122301193 and 33122301202.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (33122301229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16561150610 + 16561150611.

It is an arithmetic number, because the mean of its divisors is an integer number (16561150611).

Almost surely, 2^33122301221 is an apocalyptic number.

It is an amenable number.

33122301221 is a deficient number, since it is larger than the sum of its proper divisors (1).

33122301221 is an equidigital number, since it uses as much as digits as its factorization.

33122301221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 33122301221 its reverse (12210322133), we get a palindrome (45332623354).

The spelling of 33122301221 in words is "thirty-three billion, one hundred twenty-two million, three hundred one thousand, two hundred twenty-one".