33210121121 has 2 divisors, whose sum is σ = 33210121122. Its totient is φ = 33210121120.

The previous prime is 33210121097. The next prime is 33210121123. The reversal of 33210121121 is 12112101233.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17540088721 + 15670032400 = 132439^2 + 125180^2 .

It is a cyclic number.

It is not a de Polignac number, because 33210121121 - 2¹⁴ = 33210104737 is a prime.

It is a super-2 number, since 2×33210121121² (a number of 22 digits) contains 22 as substring.

Together with 33210121123, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 33210121121.

It is not a weakly prime, because it can be changed into another prime (33210121123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16605060560 + 16605060561.

It is an arithmetic number, because the mean of its divisors is an integer number (16605060561).

Almost surely, 2^33210121121 is an apocalyptic number.

It is an amenable number.

33210121121 is a deficient number, since it is larger than the sum of its proper divisors (1).

33210121121 is an equidigital number, since it uses as much as digits as its factorization.

33210121121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 33210121121 its reverse (12112101233), we get a palindrome (45322222354).

The spelling of 33210121121 in words is "thirty-three billion, two hundred ten million, one hundred twenty-one thousand, one hundred twenty-one".