121212201220212 has 12 divisors (see below), whose sum is σ = 282828469513856. Its totient is φ = 40404067073400.

The previous prime is 121212201220207. The next prime is 121212201220277. The reversal of 121212201220212 is 212022102212121.

121212201220212 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-3 number, since 3×121212201220212³ (a number of 43 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5050508384164 + ... + 5050508384187.

Almost surely, 2^{121212201220212} is an apocalyptic number.

121212201220212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

121212201220212 is an abundant number, since it is smaller than the sum of its proper divisors (161616268293644).

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

121212201220212 is a wasteful number, since it uses less digits than its factorization.

121212201220212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10101016768358 (or 10101016768356 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 21.

Adding to 121212201220212 its reverse (212022102212121), we get a palindrome (333234303432333).

The spelling of 121212201220212 in words is "one hundred twenty-one trillion, two hundred twelve billion, two hundred one million, two hundred twenty thousand, two hundred twelve".