121210212012 has 24 divisors (see below), whose sum is σ = 290467716336. Its totient is φ = 39311419968.

The previous prime is 121210211971. The next prime is 121210212023. The reversal of 121210212012 is 210212012121.

121210212012 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 121210211982 and 121210212000.

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, 136497543 + ... + 136498430.

It is an arithmetic number, because the mean of its divisors is an integer number (12102821514).

Almost surely, 2^121210212012 is an apocalyptic number.

121210212012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

121210212012 is an abundant number, since it is smaller than the sum of its proper divisors (169257504324).

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

121210212012 is a wasteful number, since it uses less digits than its factorization.

121210212012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 272996017 (or 272996015 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 121210212012 its reverse (210212012121), we get a palindrome (331422224133).

It can be divided in two parts, 121 and 210212012, that multiplied together give a palindrome (25435653452).

The spelling of 121210212012 in words is "one hundred twenty-one billion, two hundred ten million, two hundred twelve thousand, twelve".