103321001221 has 4 divisors (see below), whose sum is σ = 103350183244. Its totient is φ = 103291819200.

The previous prime is 103321001219. The next prime is 103321001237. The reversal of 103321001221 is 122100123301.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 79870672996 + 23450328225 = 282614^2 + 153135^2 .

It is a cyclic number.

It is not a de Polignac number, because 103321001221 - 2¹ = 103321001219 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 103321001195 and 103321001204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (103321001621) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14585700 + ... + 14592781.

It is an arithmetic number, because the mean of its divisors is an integer number (25837545811).

Almost surely, 2^103321001221 is an apocalyptic number.

It is an amenable number.

103321001221 is a deficient number, since it is larger than the sum of its proper divisors (29182023).

103321001221 is an equidigital number, since it uses as much as digits as its factorization.

103321001221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29182022.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 103321001221 its reverse (122100123301), we get a palindrome (225421124522).

The spelling of 103321001221 in words is "one hundred three billion, three hundred twenty-one million, one thousand, two hundred twenty-one".