121303421 has 8 divisors (see below), whose sum is σ = 123057984. Its totient is φ = 119556000.

The previous prime is 121303411. The next prime is 121303423. The reversal of 121303421 is 124303121.

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 121303421 - 2²⁶ = 54194557 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 121303421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121303423) 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, 38921 + ... + 41921.

It is an arithmetic number, because the mean of its divisors is an integer number (15382248).

Almost surely, 2^121303421 is an apocalyptic number.

It is an amenable number.

121303421 is a deficient number, since it is larger than the sum of its proper divisors (1754563).

121303421 is an equidigital number, since it uses as much as digits as its factorization.

121303421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3571.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 121303421 is about 11013.7832283008. The cubic root of 121303421 is about 495.0218281025.

Adding to 121303421 its reverse (124303121), we get a palindrome (245606542).

It can be divided in two parts, 12130 and 3421, that added together give a palindrome (15551).

The spelling of 121303421 in words is "one hundred twenty-one million, three hundred three thousand, four hundred twenty-one".