2201121321 has 32 divisors (see below), whose sum is σ = 3507038208. Its totient is φ = 1200650880.

The previous prime is 2201121311. The next prime is 2201121337. The reversal of 2201121321 is 1231211022.

It is not a de Polignac number, because 2201121321 - 2¹⁰ = 2201120297 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2201121321.

It is not an unprimeable number, because it can be changed into a prime (2201121301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 247270 + ... + 256016.

It is an arithmetic number, because the mean of its divisors is an integer number (109594944).

Almost surely, 2^2201121321 is an apocalyptic number.

2201121321 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

2201121321 is a deficient number, since it is larger than the sum of its proper divisors (1305916887).

2201121321 is a wasteful number, since it uses less digits than its factorization.

2201121321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9301.

The product of its (nonzero) digits is 48, while the sum is 15.

The square root of 2201121321 is about 46916.1093975193. The cubic root of 2201121321 is about 1300.8123760631.

Adding to 2201121321 its reverse (1231211022), we get a palindrome (3432332343).

The spelling of 2201121321 in words is "two billion, two hundred one million, one hundred twenty-one thousand, three hundred twenty-one".