2222111421 has 16 divisors (see below), whose sum is σ = 3293784000. Its totient is φ = 1480612464.

The previous prime is 2222111413. The next prime is 2222111431. The reversal of 2222111421 is 1241112222.

2222111421 is a `hidden beast` number, since 22 + 221 + 1 + 1 + 421 = 666.

It is not a de Polignac number, because 2222111421 - 2³ = 2222111413 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2222111394 and 2222111403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2222111431) 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 15 ways as a sum of consecutive naturals, for example, 31510 + ... + 73736.

It is an arithmetic number, because the mean of its divisors is an integer number (205861500).

Almost surely, 2^2222111421 is an apocalyptic number.

It is an amenable number.

2222111421 is a deficient number, since it is larger than the sum of its proper divisors (1071672579).

2222111421 is a wasteful number, since it uses less digits than its factorization.

2222111421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44185 (or 44179 counting only the distinct ones).

The product of its digits is 128, while the sum is 18.

The square root of 2222111421 is about 47139.2768400195. The cubic root of 2222111421 is about 1304.9341914232.

Adding to 2222111421 its reverse (1241112222), we get a palindrome (3463223643).

The spelling of 2222111421 in words is "two billion, two hundred twenty-two million, one hundred eleven thousand, four hundred twenty-one".