121122122212112 has 20 divisors (see below), whose sum is σ = 268198984898496. Its totient is φ = 51909480948000.

The previous prime is 121122122212097. The next prime is 121122122212199. The reversal of 121122122212112 is 211212221221121.

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 (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 540723759764 + ... + 540723759987.

Almost surely, 2^{121122122212112} is an apocalyptic number.

It is an amenable number.

121122122212112 is an abundant number, since it is smaller than the sum of its proper divisors (147076862686384).

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

121122122212112 is a wasteful number, since it uses less digits than its factorization.

121122122212112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1081447519766 (or 1081447519760 counting only the distinct ones).

The product of its digits is 256, while the sum is 23.

Adding to 121122122212112 its reverse (211212221221121), we get a palindrome (332334343433233).

Subtracting 121122122212112 from its reverse (211212221221121), we obtain a palindrome (90090099009009).

The spelling of 121122122212112 in words is "one hundred twenty-one trillion, one hundred twenty-two billion, one hundred twenty-two million, two hundred twelve thousand, one hundred twelve".