2222201121 has 16 divisors (see below), whose sum is σ = 3585400704. Its totient is φ = 1195133184.

The previous prime is 2222201083. The next prime is 2222201131. The reversal of 2222201121 is 1211022222.

It is not a de Polignac number, because 2222201121 - 2⁶ = 2222201057 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2222201121.

It is not an unprimeable number, because it can be changed into a prime (2222201131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3111970 + ... + 3112683.

It is an arithmetic number, because the mean of its divisors is an integer number (224087544).

Almost surely, 2^2222201121 is an apocalyptic number.

2222201121 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

2222201121 is a deficient number, since it is larger than the sum of its proper divisors (1363199583).

2222201121 is a wasteful number, since it uses less digits than its factorization.

2222201121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6224680.

The product of its (nonzero) digits is 64, while the sum is 15.

The square root of 2222201121 is about 47140.2282663120. The cubic root of 2222201121 is about 1304.9517499519.

Adding to 2222201121 its reverse (1211022222), we get a palindrome (3433223343).

The spelling of 2222201121 in words is "two billion, two hundred twenty-two million, two hundred one thousand, one hundred twenty-one".