121321673 has 8 divisors (see below), whose sum is σ = 140136480. Its totient is φ = 103804480.

The previous prime is 121321667. The next prime is 121321679. The reversal of 121321673 is 376123121.

It is an interprime number because it is at equal distance from previous prime (121321667) and next prime (121321679).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 121321673 - 2⁶ = 121321609 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (121321679) 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, 324203 + ... + 324576.

It is an arithmetic number, because the mean of its divisors is an integer number (17517060).

Almost surely, 2^121321673 is an apocalyptic number.

It is an amenable number.

121321673 is a deficient number, since it is larger than the sum of its proper divisors (18814807).

121321673 is a wasteful number, since it uses less digits than its factorization.

121321673 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 648807.

The product of its digits is 1512, while the sum is 26.

The square root of 121321673 is about 11014.6117952473. The cubic root of 121321673 is about 495.0466547870.

Adding to 121321673 its reverse (376123121), we get a palindrome (497444794).

The spelling of 121321673 in words is "one hundred twenty-one million, three hundred twenty-one thousand, six hundred seventy-three".