2204545021 has 8 divisors (see below), whose sum is σ = 2519890560. Its totient is φ = 1889302128.

The previous prime is 2204545001. The next prime is 2204545033. The reversal of 2204545021 is 1205454022.

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

It is not a de Polignac number, because 2204545021 - 2²⁵ = 2170990589 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 (2204545001) 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, 27795 + ... + 71983.

It is an arithmetic number, because the mean of its divisors is an integer number (314986320).

Almost surely, 2^2204545021 is an apocalyptic number.

It is an amenable number.

2204545021 is a deficient number, since it is larger than the sum of its proper divisors (315345539).

2204545021 is an equidigital number, since it uses as much as digits as its factorization.

2204545021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51323.

The product of its (nonzero) digits is 3200, while the sum is 25.

The square root of 2204545021 is about 46952.5826872175. The cubic root of 2204545021 is about 1301.4864694889.

Adding to 2204545021 its reverse (1205454022), we get a palindrome (3409999043).

Subtracting from 2204545021 its reverse (1205454022), we obtain a palindrome (999090999).

The spelling of 2204545021 in words is "two billion, two hundred four million, five hundred forty-five thousand, twenty-one".