121242211112 has 32 divisors (see below), whose sum is σ = 249254327520. Its totient is φ = 54830341440.

The previous prime is 121242211093. The next prime is 121242211159. The reversal of 121242211112 is 211112242121.

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 7 ways as a sum of consecutive naturals, for example, 3479498 + ... + 3514169.

It is an arithmetic number, because the mean of its divisors is an integer number (7789197735).

Almost surely, 2^121242211112 is an apocalyptic number.

It is an amenable number.

121242211112 is an abundant number, since it is smaller than the sum of its proper divisors (128012116408).

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

121242211112 is a wasteful number, since it uses less digits than its factorization.

121242211112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6993881 (or 6993877 counting only the distinct ones).

The product of its digits is 128, while the sum is 20.

Adding to 121242211112 its reverse (211112242121), we get a palindrome (332354453233).

The spelling of 121242211112 in words is "one hundred twenty-one billion, two hundred forty-two million, two hundred eleven thousand, one hundred twelve".