2201326721 has 8 divisors (see below), whose sum is σ = 2402075424. Its totient is φ = 2000682720.

The previous prime is 2201326717. The next prime is 2201326723. The reversal of 2201326721 is 1276231022.

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 2201326721 - 2² = 2201326717 is a prime.

It is a super-2 number, since 2×2201326721² = 9691678665177223682, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2201326723) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21590 + ... + 69776.

It is an arithmetic number, because the mean of its divisors is an integer number (300259428).

Almost surely, 2^2201326721 is an apocalyptic number.

It is an amenable number.

2201326721 is a deficient number, since it is larger than the sum of its proper divisors (200748703).

2201326721 is a wasteful number, since it uses less digits than its factorization.

2201326721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52351.

The product of its (nonzero) digits is 2016, while the sum is 26.

The square root of 2201326721 is about 46918.2983600215. The cubic root of 2201326721 is about 1300.8528370392.

Adding to 2201326721 its reverse (1276231022), we get a palindrome (3477557743).

The spelling of 2201326721 in words is "two billion, two hundred one million, three hundred twenty-six thousand, seven hundred twenty-one".