121514121251 has 8 divisors (see below), whose sum is σ = 122808518064. Its totient is φ = 120222664480.

The previous prime is 121514121167. The next prime is 121514121263. The reversal of 121514121251 is 152121415121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 121514121251 - 2¹⁰ = 121514120227 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 121514121251.

It is not an unprimeable number, because it can be changed into a prime (121514321251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 651860 + ... + 817281.

It is an arithmetic number, because the mean of its divisors is an integer number (15351064758).

Almost surely, 2^121514121251 is an apocalyptic number.

121514121251 is a deficient number, since it is larger than the sum of its proper divisors (1294396813).

121514121251 is a wasteful number, since it uses less digits than its factorization.

121514121251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1470021.

The product of its digits is 800, while the sum is 26.

Adding to 121514121251 its reverse (152121415121), we get a palindrome (273635536372).

The spelling of 121514121251 in words is "one hundred twenty-one billion, five hundred fourteen million, one hundred twenty-one thousand, two hundred fifty-one".