2005221301 has 4 divisors (see below), whose sum is σ = 2047885632. Its totient is φ = 1962556972.

The previous prime is 2005221287. The next prime is 2005221347. The reversal of 2005221301 is 1031225002.

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 a de Polignac number, because none of the positive numbers 2^k-2005221301 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 (2005225301) 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, 21332095 + ... + 21332188.

It is an arithmetic number, because the mean of its divisors is an integer number (511971408).

Almost surely, 2^2005221301 is an apocalyptic number.

It is an amenable number.

2005221301 is a deficient number, since it is larger than the sum of its proper divisors (42664331).

2005221301 is an equidigital number, since it uses as much as digits as its factorization.

2005221301 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42664330.

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 2005221301 is about 44779.6974197013. The cubic root of 2005221301 is about 1261.0165016729.

Adding to 2005221301 its reverse (1031225002), we get a palindrome (3036446303).

The spelling of 2005221301 in words is "two billion, five million, two hundred twenty-one thousand, three hundred one".