121122222 has 32 divisors (see below), whose sum is σ = 262056480. Its totient is φ = 37100160.

The previous prime is 121122193. The next prime is 121122269. The reversal of 121122222 is 222221121.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14472 + ... + 21252.

It is an arithmetic number, because the mean of its divisors is an integer number (8189265).

Almost surely, 2^121122222 is an apocalyptic number.

121122222 is an abundant number, since it is smaller than the sum of its proper divisors (140934258).

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

121122222 is a wasteful number, since it uses less digits than its factorization.

121122222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7028.

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

The square root of 121122222 is about 11005.5541432497. The cubic root of 121122222 is about 494.7752229121.

Adding to 121122222 its reverse (222221121), we get a palindrome (343343343).

The spelling of 121122222 in words is "one hundred twenty-one million, one hundred twenty-two thousand, two hundred twenty-two".