121121112212 has 48 divisors (see below), whose sum is σ = 224533209600. Its totient is φ = 57087089280.

The previous prime is 121121112191. The next prime is 121121112263. The reversal of 121121112212 is 212211121121.

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, 847214 + ... + 979802.

It is an arithmetic number, because the mean of its divisors is an integer number (4677775200).

Almost surely, 2^121121112212 is an apocalyptic number.

It is an amenable number.

121121112212 is a deficient number, since it is larger than the sum of its proper divisors (103412097388).

121121112212 is a wasteful number, since it uses less digits than its factorization.

121121112212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132816 (or 132814 counting only the distinct ones).

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

Adding to 121121112212 its reverse (212211121121), we get a palindrome (333332233333).

The spelling of 121121112212 in words is "one hundred twenty-one billion, one hundred twenty-one million, one hundred twelve thousand, two hundred twelve".