121144672 has 24 divisors (see below), whose sum is σ = 260186472. Its totient is φ = 55065600.

The previous prime is 121144613. The next prime is 121144691. The reversal of 121144672 is 276441121.

It is a super-3 number, since 3×121144672³ (a number of 25 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 121144672.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 171729 + ... + 172432.

It is an arithmetic number, because the mean of its divisors is an integer number (10841103).

Almost surely, 2^121144672 is an apocalyptic number.

It is an amenable number.

121144672 is an abundant number, since it is smaller than the sum of its proper divisors (139041800).

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

121144672 is a wasteful number, since it uses less digits than its factorization.

121144672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 344182 (or 344174 counting only the distinct ones).

The product of its digits is 2688, while the sum is 28.

The square root of 121144672 is about 11006.5740355480. The cubic root of 121144672 is about 494.8057898809.

Adding to 121144672 its reverse (276441121), we get a palindrome (397585793).

The spelling of 121144672 in words is "one hundred twenty-one million, one hundred forty-four thousand, six hundred seventy-two".