12202231212 has 18 divisors (see below), whose sum is σ = 30844528988. Its totient is φ = 4067410392.

The previous prime is 12202231207. The next prime is 12202231229. The reversal of 12202231212 is 21213220221.

12202231212 is a `hidden beast` number, since 1 + 220 + 2 + 231 + 212 = 666.

It is a tau number, because it is divible by the number of its divisors (18).

It is a super-3 number, since 3×12202231212³ (a number of 31 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 169475398 + ... + 169475469.

Almost surely, 2^12202231212 is an apocalyptic number.

12202231212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12202231212 is an abundant number, since it is smaller than the sum of its proper divisors (18642297776).

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

12202231212 is a wasteful number, since it uses less digits than its factorization.

12202231212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 338950877 (or 338950872 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 12202231212 its reverse (21213220221), we get a palindrome (33415451433).

The spelling of 12202231212 in words is "twelve billion, two hundred two million, two hundred thirty-one thousand, two hundred twelve".