2204130521 has 4 divisors (see below), whose sum is σ = 2257889844. Its totient is φ = 2150371200.

The previous prime is 2204130497. The next prime is 2204130559. The reversal of 2204130521 is 1250314022.

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 29214025 + 2174916496 = 5405^2 + 46636^2 .

It is a cyclic number.

It is not a de Polignac number, because 2204130521 - 2¹⁴ = 2204114137 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2204130493 and 2204130502.

It is not an unprimeable number, because it can be changed into a prime (2204130571) 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, 26879600 + ... + 26879681.

It is an arithmetic number, because the mean of its divisors is an integer number (564472461).

Almost surely, 2^2204130521 is an apocalyptic number.

It is an amenable number.

2204130521 is a deficient number, since it is larger than the sum of its proper divisors (53759323).

2204130521 is an equidigital number, since it uses as much as digits as its factorization.

2204130521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53759322.

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 2204130521 is about 46948.1684520280. The cubic root of 2204130521 is about 1301.4048955964.

Adding to 2204130521 its reverse (1250314022), we get a palindrome (3454444543).

The spelling of 2204130521 in words is "two billion, two hundred four million, one hundred thirty thousand, five hundred twenty-one".