121751510773 has 2 divisors, whose sum is σ = 121751510774. Its totient is φ = 121751510772.

The previous prime is 121751510737. The next prime is 121751510779. The reversal of 121751510773 is 377015157121.

Together with previous prime (121751510737) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 110530981444 + 11220529329 = 332462^2 + 105927^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121751510773 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121751510779) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60875755386 + 60875755387.

It is an arithmetic number, because the mean of its divisors is an integer number (60875755387).

Almost surely, 2^121751510773 is an apocalyptic number.

It is an amenable number.

121751510773 is a deficient number, since it is larger than the sum of its proper divisors (1).

121751510773 is an equidigital number, since it uses as much as digits as its factorization.

121751510773 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 51450, while the sum is 40.

Adding to 121751510773 its reverse (377015157121), we get a palindrome (498766667894).

The spelling of 121751510773 in words is "one hundred twenty-one billion, seven hundred fifty-one million, five hundred ten thousand, seven hundred seventy-three".