2422115221 has 4 divisors (see below), whose sum is σ = 2481191244. Its totient is φ = 2363039200.

The previous prime is 2422115183. The next prime is 2422115233. The reversal of 2422115221 is 1225112242.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 786802500 + 1635312721 = 28050^2 + 40439^2 .

It is a cyclic number.

It is not a de Polignac number, because 2422115221 - 2⁷ = 2422115093 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2422115192 and 2422115201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2422115251) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29537950 + ... + 29538031.

It is an arithmetic number, because the mean of its divisors is an integer number (620297811).

Almost surely, 2^2422115221 is an apocalyptic number.

It is an amenable number.

2422115221 is a deficient number, since it is larger than the sum of its proper divisors (59076023).

2422115221 is an equidigital number, since it uses as much as digits as its factorization.

2422115221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59076022.

The product of its digits is 640, while the sum is 22.

The square root of 2422115221 is about 49214.9897998567. The cubic root of 2422115221 is about 1342.9657378404.

Adding to 2422115221 its reverse (1225112242), we get a palindrome (3647227463).

The spelling of 2422115221 in words is "two billion, four hundred twenty-two million, one hundred fifteen thousand, two hundred twenty-one".