133121020247 has 2 divisors, whose sum is σ = 133121020248. Its totient is φ = 133121020246.

The previous prime is 133121020213. The next prime is 133121020297. The reversal of 133121020247 is 742020121331.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 133121020247 - 2⁶ = 133121020183 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (133121020297) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66560510123 + 66560510124.

It is an arithmetic number, because the mean of its divisors is an integer number (66560510124).

Almost surely, 2^133121020247 is an apocalyptic number.

133121020247 is a deficient number, since it is larger than the sum of its proper divisors (1).

133121020247 is an equidigital number, since it uses as much as digits as its factorization.

133121020247 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2016, while the sum is 26.

Adding to 133121020247 its reverse (742020121331), we get a palindrome (875141141578).

The spelling of 133121020247 in words is "one hundred thirty-three billion, one hundred twenty-one million, twenty thousand, two hundred forty-seven".