33313320121 has 2 divisors, whose sum is σ = 33313320122. Its totient is φ = 33313320120.

The previous prime is 33313320113. The next prime is 33313320127. The reversal of 33313320121 is 12102331333.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 25868218896 + 7445101225 = 160836^2 + 86285^2 .

It is a cyclic number.

It is not a de Polignac number, because 33313320121 - 2³ = 33313320113 is a prime.

It is a super-2 number, since 2×33313320121² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 33313320092 and 33313320101.

It is not a weakly prime, because it can be changed into another prime (33313320127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16656660060 + 16656660061.

It is an arithmetic number, because the mean of its divisors is an integer number (16656660061).

Almost surely, 2^33313320121 is an apocalyptic number.

It is an amenable number.

33313320121 is a deficient number, since it is larger than the sum of its proper divisors (1).

33313320121 is an equidigital number, since it uses as much as digits as its factorization.

33313320121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 972, while the sum is 22.

Adding to 33313320121 its reverse (12102331333), we get a palindrome (45415651454).

The spelling of 33313320121 in words is "thirty-three billion, three hundred thirteen million, three hundred twenty thousand, one hundred twenty-one".