121121144 has 16 divisors (see below), whose sum is σ = 227274120. Its totient is φ = 60514720.

The previous prime is 121121129. The next prime is 121121167. The reversal of 121121144 is 441121121.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

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 in 3 ways as a sum of consecutive naturals, for example, 7214 + ... + 17154.

Almost surely, 2^121121144 is an apocalyptic number.

It is an amenable number.

121121144 is a deficient number, since it is larger than the sum of its proper divisors (106152976).

121121144 is a wasteful number, since it uses less digits than its factorization.

121121144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11470 (or 11466 counting only the distinct ones).

The product of its digits is 64, while the sum is 17.

The square root of 121121144 is about 11005.5051678694. The cubic root of 121121144 is about 494.7737550579.

Adding to 121121144 its reverse (441121121), we get a palindrome (562242265).

The spelling of 121121144 in words is "one hundred twenty-one million, one hundred twenty-one thousand, one hundred forty-four".