12121010212 has 12 divisors (see below), whose sum is σ = 22134018816. Its totient is φ = 5797004840.

The previous prime is 12121010207. The next prime is 12121010221. The reversal of 12121010212 is 21201012121.

12121010212 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-3 number, since 3×12121010212³ (a number of 31 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12121010192 and 12121010201.

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 3 ways as a sum of consecutive naturals, for example, 65874964 + ... + 65875147.

It is an arithmetic number, because the mean of its divisors is an integer number (1844501568).

Almost surely, 2^12121010212 is an apocalyptic number.

It is an amenable number.

12121010212 is a deficient number, since it is larger than the sum of its proper divisors (10013008604).

12121010212 is a wasteful number, since it uses less digits than its factorization.

12121010212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131750138 (or 131750136 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 12121010212 its reverse (21201012121), we get a palindrome (33322022333).

The spelling of 12121010212 in words is "twelve billion, one hundred twenty-one million, ten thousand, two hundred twelve".