103321421 has 4 divisors (see below), whose sum is σ = 118081632. Its totient is φ = 88561212.

The previous prime is 103321417. The next prime is 103321423. The reversal of 103321421 is 124123301.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 103321421 - 2² = 103321417 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 103321421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (103321423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7380095 + ... + 7380108.

It is an arithmetic number, because the mean of its divisors is an integer number (29520408).

Almost surely, 2^103321421 is an apocalyptic number.

It is an amenable number.

103321421 is a deficient number, since it is larger than the sum of its proper divisors (14760211).

103321421 is an equidigital number, since it uses as much as digits as its factorization.

103321421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14760210.

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

The square root of 103321421 is about 10164.7145065663. The cubic root of 103321421 is about 469.2419059899.

Adding to 103321421 its reverse (124123301), we get a palindrome (227444722).

The spelling of 103321421 in words is "one hundred three million, three hundred twenty-one thousand, four hundred twenty-one".