33120220213 has 2 divisors, whose sum is σ = 33120220214. Its totient is φ = 33120220212.

The previous prime is 33120220187. The next prime is 33120220223. The reversal of 33120220213 is 31202202133.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 28817778564 + 4302441649 = 169758^2 + 65593^2 .

It is a cyclic number.

It is not a de Polignac number, because 33120220213 - 2⁵ = 33120220181 is a prime.

It is a super-2 number, since 2×33120220213² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (33120220223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16560110106 + 16560110107.

It is an arithmetic number, because the mean of its divisors is an integer number (16560110107).

Almost surely, 2^33120220213 is an apocalyptic number.

It is an amenable number.

33120220213 is a deficient number, since it is larger than the sum of its proper divisors (1).

33120220213 is an equidigital number, since it uses as much as digits as its factorization.

33120220213 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 19.

Adding to 33120220213 its reverse (31202202133), we get a palindrome (64322422346).

It can be divided in two parts, 3 and 3120220213, that multiplied together give a palindrome (9360660639).

The spelling of 33120220213 in words is "thirty-three billion, one hundred twenty million, two hundred twenty thousand, two hundred thirteen".