33120422021 has 2 divisors, whose sum is σ = 33120422022. Its totient is φ = 33120422020.

The previous prime is 33120422009. The next prime is 33120422053. The reversal of 33120422021 is 12022402133.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 23069356996 + 10051065025 = 151886^2 + 100255^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-33120422021 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 33120421984 and 33120422002.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (33120422081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16560211010 + 16560211011.

It is an arithmetic number, because the mean of its divisors is an integer number (16560211011).

Almost surely, 2^33120422021 is an apocalyptic number.

It is an amenable number.

33120422021 is a deficient number, since it is larger than the sum of its proper divisors (1).

33120422021 is an equidigital number, since it uses as much as digits as its factorization.

33120422021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 33120422021 its reverse (12022402133), we get a palindrome (45142824154).

The spelling of 33120422021 in words is "thirty-three billion, one hundred twenty million, four hundred twenty-two thousand, twenty-one".