121003424144 has 10 divisors (see below), whose sum is σ = 234444134310. Its totient is φ = 60501712064.

The previous prime is 121003424137. The next prime is 121003424147. The reversal of 121003424144 is 441424300121.

It can be written as a sum of positive squares in only one way, i.e., 100862137744 + 20141286400 = 317588^2 + 141920^2 .

It is not an unprimeable number, because it can be changed into a prime (121003424147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3781356989 + ... + 3781357020.

It is an arithmetic number, because the mean of its divisors is an integer number (23444413431).

Almost surely, 2^121003424144 is an apocalyptic number.

It is an amenable number.

121003424144 is a deficient number, since it is larger than the sum of its proper divisors (113440710166).

121003424144 is an equidigital number, since it uses as much as digits as its factorization.

121003424144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7562714017 (or 7562714011 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 26.

Adding to 121003424144 its reverse (441424300121), we get a palindrome (562427724265).

The spelling of 121003424144 in words is "one hundred twenty-one billion, three million, four hundred twenty-four thousand, one hundred forty-four".