121212110212212 has 24 divisors (see below), whose sum is σ = 282831667834912. Its totient is φ = 40403549498400.

The previous prime is 121212110212181. The next prime is 121212110212217. The reversal of 121212110212212 is 212212011212121.

It is a super-3 number, since 3×121212110212212³ (a number of 43 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121212110212217) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 59867614 + ... + 61859157.

Almost surely, 2^{121212110212212} is an apocalyptic number.

121212110212212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

121212110212212 is an abundant number, since it is smaller than the sum of its proper divisors (161619557622700).

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

121212110212212 is a wasteful number, since it uses less digits than its factorization.

121212110212212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121809759 (or 121809757 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 21.

Adding to 121212110212212 its reverse (212212011212121), we get a palindrome (333424121424333).

Subtracting 121212110212212 from its reverse (212212011212121), we obtain a palindrome (90999900999909).

The spelling of 121212110212212 in words is "one hundred twenty-one trillion, two hundred twelve billion, one hundred ten million, two hundred twelve thousand, two hundred twelve".