12101010212 has 24 divisors (see below), whose sum is σ = 21542008320. Its totient is φ = 5946211040.

The previous prime is 12101010203. The next prime is 12101010277. The reversal of 12101010212 is 21201010121.

It is a junction number, because it is equal to n+sod(n) for n = 12101010193 and 12101010202.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1231037 + ... + 1240827.

It is an arithmetic number, because the mean of its divisors is an integer number (897583680).

Almost surely, 2^12101010212 is an apocalyptic number.

It is an amenable number.

12101010212 is a deficient number, since it is larger than the sum of its proper divisors (9440998108).

12101010212 is a wasteful number, since it uses less digits than its factorization.

12101010212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15091 (or 15089 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 12101010212 its reverse (21201010121), we get a palindrome (33302020333).

Subtracting 12101010212 from its reverse (21201010121), we obtain a palindrome (9099999909).

The spelling of 12101010212 in words is "twelve billion, one hundred one million, ten thousand, two hundred twelve".