10404324221 has 4 divisors (see below), whose sum is σ = 10408296444. Its totient is φ = 10400352000.

The previous prime is 10404324179. The next prime is 10404324233. The reversal of 10404324221 is 12242340401.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 12242340401 = 29 ⋅422149669.

It can be written as a sum of positive squares in 2 ways, for example, as 9215040025 + 1189284196 = 95995^2 + 34486^2 .

It is a cyclic number.

It is not a de Polignac number, because 10404324221 - 2⁶ = 10404324157 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10404324421) 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, 1982180 + ... + 1987421.

It is an arithmetic number, because the mean of its divisors is an integer number (2602074111).

Almost surely, 2^10404324221 is an apocalyptic number.

It is an amenable number.

10404324221 is a deficient number, since it is larger than the sum of its proper divisors (3972223).

10404324221 is an equidigital number, since it uses as much as digits as its factorization.

10404324221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3972222.

The product of its (nonzero) digits is 1536, while the sum is 23.

Adding to 10404324221 its reverse (12242340401), we get a palindrome (22646664622).

The spelling of 10404324221 in words is "ten billion, four hundred four million, three hundred twenty-four thousand, two hundred twenty-one".