2205420401 has 4 divisors (see below), whose sum is σ = 2210184192. Its totient is φ = 2200656612.

The previous prime is 2205420379. The next prime is 2205420403. The reversal of 2205420401 is 1040245022.

It is a happy number.

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.

It is a cyclic number.

It is not a de Polignac number, because 2205420401 - 2⁶ = 2205420337 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2205420403) 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, 2381201 + ... + 2382126.

It is an arithmetic number, because the mean of its divisors is an integer number (552546048).

Almost surely, 2^2205420401 is an apocalyptic number.

It is an amenable number.

2205420401 is a deficient number, since it is larger than the sum of its proper divisors (4763791).

2205420401 is an equidigital number, since it uses as much as digits as its factorization.

2205420401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4763790.

The product of its (nonzero) digits is 640, while the sum is 20.

The square root of 2205420401 is about 46961.9037199303. The cubic root of 2205420401 is about 1301.6587112970.

Adding to 2205420401 its reverse (1040245022), we get a palindrome (3245665423).

The spelling of 2205420401 in words is "two billion, two hundred five million, four hundred twenty thousand, four hundred one".