2121122122 has 8 divisors (see below), whose sum is σ = 3636209376. Its totient is φ = 909052332.

The previous prime is 2121122117. The next prime is 2121122141. The reversal of 2121122122 is 2212211212.

It is a happy number.

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

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 2121122096 and 2121122105.

It is an unprimeable number.

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, 75754348 + ... + 75754375.

It is an arithmetic number, because the mean of its divisors is an integer number (454526172).

Almost surely, 2^2121122122 is an apocalyptic number.

2121122122 is a deficient number, since it is larger than the sum of its proper divisors (1515087254).

2121122122 is a wasteful number, since it uses less digits than its factorization.

2121122122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 151508732.

The product of its digits is 64, while the sum is 16.

The square root of 2121122122 is about 46055.6415871064. The cubic root of 2121122122 is about 1284.8582707923.

Adding to 2121122122 its reverse (2212211212), we get a palindrome (4333333334).

The spelling of 2121122122 in words is "two billion, one hundred twenty-one million, one hundred twenty-two thousand, one hundred twenty-two".