121921373 has 8 divisors (see below), whose sum is σ = 139414848. Its totient is φ = 104446944.

The previous prime is 121921361. The next prime is 121921379. The reversal of 121921373 is 373129121.

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

It is not a de Polignac number, because 121921373 - 2⁸ = 121921117 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121921379) 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, 13790 + ... + 20832.

It is an arithmetic number, because the mean of its divisors is an integer number (17426856).

Almost surely, 2^121921373 is an apocalyptic number.

It is an amenable number.

121921373 is a deficient number, since it is larger than the sum of its proper divisors (17493475).

121921373 is an equidigital number, since it uses as much as digits as its factorization.

121921373 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9523.

The product of its digits is 2268, while the sum is 29.

The square root of 121921373 is about 11041.8011664764. The cubic root of 121921373 is about 495.8609958313.

The spelling of 121921373 in words is "one hundred twenty-one million, nine hundred twenty-one thousand, three hundred seventy-three".