121392605744 has 10 divisors (see below), whose sum is σ = 235198173660. Its totient is φ = 60696302864.

The previous prime is 121392605681. The next prime is 121392605801. The reversal of 121392605744 is 447506293121.

It is a junction number, because it is equal to n+sod(n) for n = 121392605695 and 121392605704.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3793518914 + ... + 3793518945.

It is an arithmetic number, because the mean of its divisors is an integer number (23519817366).

Almost surely, 2^121392605744 is an apocalyptic number.

It is an amenable number.

121392605744 is a deficient number, since it is larger than the sum of its proper divisors (113805567916).

121392605744 is an equidigital number, since it uses as much as digits as its factorization.

121392605744 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7587037867 (or 7587037861 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 44.

Adding to 121392605744 its reverse (447506293121), we get a palindrome (568898898865).

The spelling of 121392605744 in words is "one hundred twenty-one billion, three hundred ninety-two million, six hundred five thousand, seven hundred forty-four".