2201402321 has 4 divisors (see below), whose sum is σ = 2204970852. Its totient is φ = 2197833792.

The previous prime is 2201402303. The next prime is 2201402327. The reversal of 2201402321 is 1232041022.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 583753921 + 1617648400 = 24161^2 + 40220^2 .

It is a cyclic number.

It is not a de Polignac number, because 2201402321 - 2²² = 2197208017 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2201402321.

It is not an unprimeable number, because it can be changed into a prime (2201402327) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1783340 + ... + 1784573.

It is an arithmetic number, because the mean of its divisors is an integer number (551242713).

Almost surely, 2^2201402321 is an apocalyptic number.

It is an amenable number.

2201402321 is a deficient number, since it is larger than the sum of its proper divisors (3568531).

2201402321 is an equidigital number, since it uses as much as digits as its factorization.

2201402321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3568530.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 2201402321 is about 46919.1040089216. The cubic root of 2201402321 is about 1300.8677285662.

Adding to 2201402321 its reverse (1232041022), we get a palindrome (3433443343).

The spelling of 2201402321 in words is "two billion, two hundred one million, four hundred two thousand, three hundred twenty-one".