121123275738 has 32 divisors (see below), whose sum is σ = 251017958400. Its totient is φ = 38936295216.

The previous prime is 121123275727. The next prime is 121123275751. The reversal of 121123275738 is 837572321121.

It is a self number, because there is not a number n which added to its sum of digits gives 121123275738.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 2950948 + ... + 2991711.

It is an arithmetic number, because the mean of its divisors is an integer number (7844311200).

Almost surely, 2^121123275738 is an apocalyptic number.

121123275738 is an abundant number, since it is smaller than the sum of its proper divisors (129894682662).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

121123275738 is a wasteful number, since it uses less digits than its factorization.

121123275738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5942786.

The product of its digits is 141120, while the sum is 42.

Adding to 121123275738 its reverse (837572321121), we get a palindrome (958695596859).

The spelling of 121123275738 in words is "one hundred twenty-one billion, one hundred twenty-three million, two hundred seventy-five thousand, seven hundred thirty-eight".