2220131121 has 16 divisors (see below), whose sum is σ = 3196225536. Its totient is φ = 1362658176.

The previous prime is 2220131117. The next prime is 2220131129. The reversal of 2220131121 is 1211310222.

It is not a de Polignac number, because 2220131121 - 2² = 2220131117 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2220131121.

It is not an unprimeable number, because it can be changed into a prime (2220131129) 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, 59380 + ... + 89253.

It is an arithmetic number, because the mean of its divisors is an integer number (199764096).

Almost surely, 2^2220131121 is an apocalyptic number.

It is an amenable number.

2220131121 is a deficient number, since it is larger than the sum of its proper divisors (976094415).

2220131121 is a wasteful number, since it uses less digits than its factorization.

2220131121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149032.

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

The square root of 2220131121 is about 47118.2673811336. The cubic root of 2220131121 is about 1304.5464327078.

Adding to 2220131121 its reverse (1211310222), we get a palindrome (3431441343).

The spelling of 2220131121 in words is "two billion, two hundred twenty million, one hundred thirty-one thousand, one hundred twenty-one".