33120123221 has 2 divisors, whose sum is σ = 33120123222. Its totient is φ = 33120123220.

The previous prime is 33120123173. The next prime is 33120123229. The reversal of 33120123221 is 12232102133.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 32947332196 + 172791025 = 181514^2 + 13145^2 .

It is a cyclic number.

It is not a de Polignac number, because 33120123221 - 2³⁴ = 15940254037 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 33120123193 and 33120123202.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (33120123229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16560061610 + 16560061611.

It is an arithmetic number, because the mean of its divisors is an integer number (16560061611).

Almost surely, 2^33120123221 is an apocalyptic number.

It is an amenable number.

33120123221 is a deficient number, since it is larger than the sum of its proper divisors (1).

33120123221 is an equidigital number, since it uses as much as digits as its factorization.

33120123221 is an odious number, because the sum of its binary digits is odd.

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

Adding to 33120123221 its reverse (12232102133), we get a palindrome (45352225354).

The spelling of 33120123221 in words is "thirty-three billion, one hundred twenty million, one hundred twenty-three thousand, two hundred twenty-one".