2201221001 has 8 divisors (see below), whose sum is σ = 2518616640. Its totient is φ = 1884559248.

The previous prime is 2201220971. The next prime is 2201221019. The reversal of 2201221001 is 1001221022.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 2201221001 - 2¹⁴ = 2201204617 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2201221091) 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 7 ways as a sum of consecutive naturals, for example, 177026 + ... + 189051.

It is an arithmetic number, because the mean of its divisors is an integer number (314827080).

Almost surely, 2^2201221001 is an apocalyptic number.

It is an amenable number.

2201221001 is a deficient number, since it is larger than the sum of its proper divisors (317395639).

2201221001 is an equidigital number, since it uses as much as digits as its factorization.

2201221001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 366943.

The product of its (nonzero) digits is 16, while the sum is 11.

The square root of 2201221001 is about 46917.1717071692. The cubic root of 2201221001 is about 1300.8320119670.

Adding to 2201221001 its reverse (1001221022), we get a palindrome (3202442023).

It can be divided in two parts, 220 and 1221001, that added together give a palindrome (1221221).

The spelling of 2201221001 in words is "two billion, two hundred one million, two hundred twenty-one thousand, one".