121331031271 has 2 divisors, whose sum is σ = 121331031272. Its totient is φ = 121331031270.

The previous prime is 121331031259. The next prime is 121331031301. The reversal of 121331031271 is 172130133121.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 121331031271 - 2¹⁷ = 121330900199 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121331031071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60665515635 + 60665515636.

It is an arithmetic number, because the mean of its divisors is an integer number (60665515636).

Almost surely, 2^121331031271 is an apocalyptic number.

121331031271 is a deficient number, since it is larger than the sum of its proper divisors (1).

121331031271 is an equidigital number, since it uses as much as digits as its factorization.

121331031271 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 756, while the sum is 25.

Adding to 121331031271 its reverse (172130133121), we get a palindrome (293461164392).

The spelling of 121331031271 in words is "one hundred twenty-one billion, three hundred thirty-one million, thirty-one thousand, two hundred seventy-one".