2204242521 has 8 divisors (see below), whose sum is σ = 3165066240. Its totient is φ = 1356456912.

The previous prime is 2204242487. The next prime is 2204242531. The reversal of 2204242521 is 1252424022.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2204242521 - 2³¹ = 56758873 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2204242491 and 2204242500.

It is not an unprimeable number, because it can be changed into a prime (2204242531) 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, 28259481 + ... + 28259558.

It is an arithmetic number, because the mean of its divisors is an integer number (395633280).

Almost surely, 2^2204242521 is an apocalyptic number.

It is an amenable number.

2204242521 is a deficient number, since it is larger than the sum of its proper divisors (960823719).

2204242521 is a wasteful number, since it uses less digits than its factorization.

2204242521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56519055.

The product of its (nonzero) digits is 2560, while the sum is 24.

The square root of 2204242521 is about 46949.3612416612. The cubic root of 2204242521 is about 1301.4269382837.

Adding to 2204242521 its reverse (1252424022), we get a palindrome (3456666543).

The spelling of 2204242521 in words is "two billion, two hundred four million, two hundred forty-two thousand, five hundred twenty-one".