33021120961 has 2 divisors, whose sum is σ = 33021120962. Its totient is φ = 33021120960.

The previous prime is 33021120887. The next prime is 33021121039. The reversal of 33021120961 is 16902112033.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19225209025 + 13795911936 = 138655^2 + 117456^2 .

It is a cyclic number.

It is not a de Polignac number, because 33021120961 - 2¹⁵ = 33021088193 is a prime.

It is not a weakly prime, because it can be changed into another prime (33021120061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16510560480 + 16510560481.

It is an arithmetic number, because the mean of its divisors is an integer number (16510560481).

Almost surely, 2^33021120961 is an apocalyptic number.

It is an amenable number.

33021120961 is a deficient number, since it is larger than the sum of its proper divisors (1).

33021120961 is an equidigital number, since it uses as much as digits as its factorization.

33021120961 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1944, while the sum is 28.

Adding to 33021120961 its reverse (16902112033), we get a palindrome (49923232994).

The spelling of 33021120961 in words is "thirty-three billion, twenty-one million, one hundred twenty thousand, nine hundred sixty-one".