12201222010212 has 36 divisors (see below), whose sum is σ = 30842361115020. Its totient is φ = 4067023464192.

The previous prime is 12201222010169. The next prime is 12201222010213. The reversal of 12201222010212 is 21201022210221.

It is a happy number.

12201222010212 is a `hidden beast` number, since 1 + 220 + 1 + 2 + 220 + 10 + 212 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 3126764646756 + 9074457363456 = 1768266^2 + 3012384^2 .

It is a tau number, because it is divible by the number of its divisors (36).

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

It is not an unprimeable number, because it can be changed into a prime (12201222010213) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 889864 + ... + 5019392.

It is an arithmetic number, because the mean of its divisors is an integer number (856732253195).

Almost surely, 2^{12201222010212} is an apocalyptic number.

12201222010212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12201222010212 is an abundant number, since it is smaller than the sum of its proper divisors (18641139104808).

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

12201222010212 is a wasteful number, since it uses less digits than its factorization.

12201222010212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4211612 (or 4211607 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 12201222010212 its reverse (21201022210221), we get a palindrome (33402244220433).

The spelling of 12201222010212 in words is "twelve trillion, two hundred one billion, two hundred twenty-two million, ten thousand, two hundred twelve".