121222122 has 32 divisors (see below), whose sum is σ = 278794752. Its totient is φ = 34420464.

The previous prime is 121222099. The next prime is 121222133. The reversal of 121222122 is 221222121.

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

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 15 ways as a sum of consecutive naturals, for example, 2008 + ... + 15699.

It is an arithmetic number, because the mean of its divisors is an integer number (8712336).

Almost surely, 2^121222122 is an apocalyptic number.

121222122 is an abundant number, since it is smaller than the sum of its proper divisors (157572630).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

121222122 is a wasteful number, since it uses less digits than its factorization.

121222122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17882.

The product of its digits is 64, while the sum is 15.

The square root of 121222122 is about 11010.0918252302. The cubic root of 121222122 is about 494.9112135420.

Adding to 121222122 its reverse (221222121), we get a palindrome (342444243).

Subtracting 121222122 from its reverse (221222121), we obtain a palindrome (99999999).

The spelling of 121222122 in words is "one hundred twenty-one million, two hundred twenty-two thousand, one hundred twenty-two".