121303144 has 32 divisors (see below), whose sum is σ = 240688800. Its totient is φ = 57153600.

The previous prime is 121303141. The next prime is 121303153. The reversal of 121303144 is 441303121.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is not an unprimeable number, because it can be changed into a prime (121303141) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27919 + ... + 31969.

It is an arithmetic number, because the mean of its divisors is an integer number (7521525).

Almost surely, 2^121303144 is an apocalyptic number.

It is an amenable number.

121303144 is a deficient number, since it is larger than the sum of its proper divisors (119385656).

121303144 is a wasteful number, since it uses less digits than its factorization.

121303144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4273 (or 4269 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 121303144 is about 11013.7706531415. The cubic root of 121303144 is about 495.0214513031.

Adding to 121303144 its reverse (441303121), we get a palindrome (562606265).

The spelling of 121303144 in words is "one hundred twenty-one million, three hundred three thousand, one hundred forty-four".