121251304124 has 24 divisors (see below), whose sum is σ = 212622009600. Its totient is φ = 60502221360.

The previous prime is 121251304093. The next prime is 121251304129. The reversal of 121251304124 is 421403152121.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 121251304093 and 121251304102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121251304129) 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, 12600587 + ... + 12610205.

It is an arithmetic number, because the mean of its divisors is an integer number (8859250400).

Almost surely, 2^121251304124 is an apocalyptic number.

It is an amenable number.

121251304124 is a deficient number, since it is larger than the sum of its proper divisors (91370705476).

121251304124 is a wasteful number, since it uses less digits than its factorization.

121251304124 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15713 (or 15711 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 26.

Adding to 121251304124 its reverse (421403152121), we get a palindrome (542654456245).

The spelling of 121251304124 in words is "one hundred twenty-one billion, two hundred fifty-one million, three hundred four thousand, one hundred twenty-four".