121321319 has 8 divisors (see below), whose sum is σ = 138722688. Its totient is φ = 103937400.

The previous prime is 121321307. The next prime is 121321339. The reversal of 121321319 is 913123121.

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

It is a de Polignac number, because none of the positive numbers 2^k-121321319 is a prime.

It is a super-2 number, since 2×121321319² = 29437724887799522, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 121321294 and 121321303.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121321339) 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, 18644 + ... + 24294.

It is an arithmetic number, because the mean of its divisors is an integer number (17340336).

Almost surely, 2^121321319 is an apocalyptic number.

121321319 is a deficient number, since it is larger than the sum of its proper divisors (17401369).

121321319 is an equidigital number, since it uses as much as digits as its factorization.

121321319 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8725.

The product of its digits is 324, while the sum is 23.

The square root of 121321319 is about 11014.5957256724. The cubic root of 121321319 is about 495.0461732938.

The spelling of 121321319 in words is "one hundred twenty-one million, three hundred twenty-one thousand, three hundred nineteen".