121375010751 has 4 divisors (see below), whose sum is σ = 161833347672. Its totient is φ = 80916673832.

The previous prime is 121375010747. The next prime is 121375010753. The reversal of 121375010751 is 157010573121.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 121375010751 - 2² = 121375010747 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121375010753) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20229168456 + ... + 20229168461.

It is an arithmetic number, because the mean of its divisors is an integer number (40458336918).

Almost surely, 2^121375010751 is an apocalyptic number.

121375010751 is a deficient number, since it is larger than the sum of its proper divisors (40458336921).

121375010751 is an equidigital number, since it uses as much as digits as its factorization.

121375010751 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40458336920.

The product of its (nonzero) digits is 7350, while the sum is 33.

Adding to 121375010751 its reverse (157010573121), we get a palindrome (278385583872).

The spelling of 121375010751 in words is "one hundred twenty-one billion, three hundred seventy-five million, ten thousand, seven hundred fifty-one".