121345344 has 56 divisors (see below), whose sum is σ = 356737920. Its totient is φ = 40447872.

The previous prime is 121345331. The next prime is 121345349. The reversal of 121345344 is 443543121.

It is a happy number.

121345344 is a `hidden beast` number, since 121 + 3 + 4 + 534 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121345349) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 33384 + ... + 36839.

It is an arithmetic number, because the mean of its divisors is an integer number (6370320).

Almost surely, 2^121345344 is an apocalyptic number.

It is an amenable number.

121345344 is an abundant number, since it is smaller than the sum of its proper divisors (235392576).

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

121345344 is an equidigital number, since it uses as much as digits as its factorization.

121345344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70244 (or 70228 counting only the distinct ones).

The product of its digits is 5760, while the sum is 27.

The square root of 121345344 is about 11015.6862700424. The cubic root of 121345344 is about 495.0788487802.

Adding to 121345344 its reverse (443543121), we get a palindrome (564888465).

The spelling of 121345344 in words is "one hundred twenty-one million, three hundred forty-five thousand, three hundred forty-four".