121122212122 has 4 divisors (see below), whose sum is σ = 181683318186. Its totient is φ = 60561106060.

The previous prime is 121122212077. The next prime is 121122212131. The reversal of 121122212122 is 221212221121.

121122212122 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 221212221121 = 1811 ⋅122149211.

It can be written as a sum of positive squares in only one way, i.e., 121111656121 + 10556001 = 348011^2 + 3249^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 121122212122.

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 as a sum of consecutive naturals, namely, 30280553029 + ... + 30280553032.

Almost surely, 2^121122212122 is an apocalyptic number.

121122212122 is a deficient number, since it is larger than the sum of its proper divisors (60561106064).

121122212122 is an equidigital number, since it uses as much as digits as its factorization.

121122212122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60561106063.

The product of its digits is 128, while the sum is 19.

Adding to 121122212122 its reverse (221212221121), we get a palindrome (342334433243).

The spelling of 121122212122 in words is "one hundred twenty-one billion, one hundred twenty-two million, two hundred twelve thousand, one hundred twenty-two".