33020023121 has 2 divisors, whose sum is σ = 33020023122. Its totient is φ = 33020023120.

The previous prime is 33020023093. The next prime is 33020023171. The reversal of 33020023121 is 12132002033.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 25158718225 + 7861304896 = 158615^2 + 88664^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-33020023121 is a prime.

It is a super-2 number, since 2×33020023121² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 33020023121.

It is not a weakly prime, because it can be changed into another prime (33020023171) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16510011560 + 16510011561.

It is an arithmetic number, because the mean of its divisors is an integer number (16510011561).

Almost surely, 2^33020023121 is an apocalyptic number.

It is an amenable number.

33020023121 is a deficient number, since it is larger than the sum of its proper divisors (1).

33020023121 is an equidigital number, since it uses as much as digits as its factorization.

33020023121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 216, while the sum is 17.

Adding to 33020023121 its reverse (12132002033), we get a palindrome (45152025154).

The spelling of 33020023121 in words is "thirty-three billion, twenty million, twenty-three thousand, one hundred twenty-one".