133121203249 has 2 divisors, whose sum is σ = 133121203250. Its totient is φ = 133121203248.

The previous prime is 133121203247. The next prime is 133121203321. The reversal of 133121203249 is 942302121331.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 121420887025 + 11700316224 = 348455^2 + 108168^2 .

It is a cyclic number.

It is not a de Polignac number, because 133121203249 - 2¹ = 133121203247 is a prime.

Together with 133121203247, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 133121203249.

It is not a weakly prime, because it can be changed into another prime (133121203247) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66560601624 + 66560601625.

It is an arithmetic number, because the mean of its divisors is an integer number (66560601625).

Almost surely, 2^133121203249 is an apocalyptic number.

It is an amenable number.

133121203249 is a deficient number, since it is larger than the sum of its proper divisors (1).

133121203249 is an equidigital number, since it uses as much as digits as its factorization.

133121203249 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7776, while the sum is 31.

The spelling of 133121203249 in words is "one hundred thirty-three billion, one hundred twenty-one million, two hundred three thousand, two hundred forty-nine".