121308621 has 8 divisors (see below), whose sum is σ = 184851264. Its totient is φ = 69319200.

The previous prime is 121308599. The next prime is 121308623. The reversal of 121308621 is 126803121.

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

It is not a de Polignac number, because 121308621 - 2⁵ = 121308589 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 121308591 and 121308600.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121308623) 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, 2888280 + ... + 2888321.

It is an arithmetic number, because the mean of its divisors is an integer number (23106408).

Almost surely, 2^121308621 is an apocalyptic number.

It is an amenable number.

121308621 is a deficient number, since it is larger than the sum of its proper divisors (63542643).

121308621 is an equidigital number, since it uses as much as digits as its factorization.

121308621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5776611.

The product of its (nonzero) digits is 576, while the sum is 24.

The square root of 121308621 is about 11014.0192936094. The cubic root of 121308621 is about 495.0289014856.

The spelling of 121308621 in words is "one hundred twenty-one million, three hundred eight thousand, six hundred twenty-one".