133121020213 has 2 divisors, whose sum is σ = 133121020214. Its totient is φ = 133121020212.

The previous prime is 133121020211. The next prime is 133121020247. The reversal of 133121020213 is 312020121331.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 122092239889 + 11028780324 = 349417^2 + 105018^2 .

It is a cyclic number.

It is not a de Polignac number, because 133121020213 - 2¹ = 133121020211 is a prime.

Together with 133121020211, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (133121020211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66560510106 + 66560510107.

It is an arithmetic number, because the mean of its divisors is an integer number (66560510107).

Almost surely, 2^133121020213 is an apocalyptic number.

It is an amenable number.

133121020213 is a deficient number, since it is larger than the sum of its proper divisors (1).

133121020213 is an equidigital number, since it uses as much as digits as its factorization.

133121020213 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 19.

Adding to 133121020213 its reverse (312020121331), we get a palindrome (445141141544).

The spelling of 133121020213 in words is "one hundred thirty-three billion, one hundred twenty-one million, twenty thousand, two hundred thirteen".