2205541421 has 4 divisors (see below), whose sum is σ = 2205655872. Its totient is φ = 2205426972.

The previous prime is 2205541409. The next prime is 2205541439. The reversal of 2205541421 is 1241455022.

2205541421 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 2205541421 - 2¹⁰ = 2205540397 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 (2205543421) 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, 20435 + ... + 69488.

It is an arithmetic number, because the mean of its divisors is an integer number (551413968).

Almost surely, 2^2205541421 is an apocalyptic number.

It is an amenable number.

2205541421 is a deficient number, since it is larger than the sum of its proper divisors (114451).

2205541421 is an equidigital number, since it uses as much as digits as its factorization.

2205541421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114450.

The product of its (nonzero) digits is 3200, while the sum is 26.

The square root of 2205541421 is about 46963.1921934615. The cubic root of 2205541421 is about 1301.6825198879.

Adding to 2205541421 its reverse (1241455022), we get a palindrome (3446996443).

The spelling of 2205541421 in words is "two billion, two hundred five million, five hundred forty-one thousand, four hundred twenty-one".