2121222242 has 8 divisors (see below), whose sum is σ = 3320174016. Its totient is φ = 1014497572.

The previous prime is 2121222241. The next prime is 2121222253. The reversal of 2121222242 is 2422221212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-4 number, since 4×2121222242⁴ (a number of 38 digits) contains 4444 as substring.

It is not an unprimeable number, because it can be changed into a prime (2121222241) 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 3 ways as a sum of consecutive naturals, for example, 23056718 + ... + 23056809.

It is an arithmetic number, because the mean of its divisors is an integer number (415021752).

Almost surely, 2^2121222242 is an apocalyptic number.

2121222242 is a deficient number, since it is larger than the sum of its proper divisors (1198951774).

2121222242 is a wasteful number, since it uses less digits than its factorization.

2121222242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46113552.

The product of its digits is 512, while the sum is 20.

The square root of 2121222242 is about 46056.7285203802. The cubic root of 2121222242 is about 1284.8784861906.

Adding to 2121222242 its reverse (2422221212), we get a palindrome (4543443454).

The spelling of 2121222242 in words is "two billion, one hundred twenty-one million, two hundred twenty-two thousand, two hundred forty-two".