122121211112 has 16 divisors (see below), whose sum is σ = 229138203840. Its totient is φ = 61017690096.

The previous prime is 122121211111. The next prime is 122121211123. The reversal of 122121211112 is 211112121221.

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

It is not an unprimeable number, because it can be changed into a prime (122121211111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5352338 + ... + 5375105.

It is an arithmetic number, because the mean of its divisors is an integer number (14321137740).

Almost surely, 2^122121211112 is an apocalyptic number.

It is an amenable number.

122121211112 is a deficient number, since it is larger than the sum of its proper divisors (107016992728).

122121211112 is a wasteful number, since it uses less digits than its factorization.

122121211112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10728872 (or 10728868 counting only the distinct ones).

The product of its digits is 32, while the sum is 17.

Adding to 122121211112 its reverse (211112121221), we get a palindrome (333233332333).

The spelling of 122121211112 in words is "one hundred twenty-two billion, one hundred twenty-one million, two hundred eleven thousand, one hundred twelve".