12101122212 has 12 divisors (see below), whose sum is σ = 28235951856. Its totient is φ = 4033707400.

The previous prime is 12101122193. The next prime is 12101122219. The reversal of 12101122212 is 21222110121.

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

It is a junction number, because it is equal to n+sod(n) for n = 12101122191 and 12101122200.

It is not an unprimeable number, because it can be changed into a prime (12101122219) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 504213414 + ... + 504213437.

It is an arithmetic number, because the mean of its divisors is an integer number (2352995988).

Almost surely, 2^12101122212 is an apocalyptic number.

12101122212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12101122212 is an abundant number, since it is smaller than the sum of its proper divisors (16134829644).

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

12101122212 is a wasteful number, since it uses less digits than its factorization.

12101122212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1008426858 (or 1008426856 counting only the distinct ones).

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

Adding to 12101122212 its reverse (21222110121), we get a palindrome (33323232333).

The spelling of 12101122212 in words is "twelve billion, one hundred one million, one hundred twenty-two thousand, two hundred twelve".