121370321 has 8 divisors (see below), whose sum is σ = 122943744. Its totient is φ = 119806960.

The previous prime is 121370303. The next prime is 121370329. The reversal of 121370321 is 123073121.

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 121370321 - 2¹⁴ = 121353937 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 121370293 and 121370302.

It is not an unprimeable number, because it can be changed into a prime (121370329) 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, 23456 + ... + 28158.

It is an arithmetic number, because the mean of its divisors is an integer number (15367968).

Almost surely, 2^121370321 is an apocalyptic number.

It is an amenable number.

121370321 is a deficient number, since it is larger than the sum of its proper divisors (1573423).

121370321 is a wasteful number, since it uses less digits than its factorization.

121370321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5031.

The product of its (nonzero) digits is 252, while the sum is 20.

The square root of 121370321 is about 11016.8199132054. The cubic root of 121370321 is about 495.1128144731.

The spelling of 121370321 in words is "one hundred twenty-one million, three hundred seventy thousand, three hundred twenty-one".