12201212243142 has 32 divisors (see below), whose sum is σ = 29199482292960. Its totient is φ = 3754219151520.

The previous prime is 12201212243071. The next prime is 12201212243153. The reversal of 12201212243142 is 24134221210221.

12201212243142 is a `hidden beast` number, since 1 + 2 + 2 + 0 + 121 + 224 + 314 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8690321409 + ... + 8690322812.

It is an arithmetic number, because the mean of its divisors is an integer number (912483821655).

Almost surely, 2^{12201212243142} is an apocalyptic number.

12201212243142 is an abundant number, since it is smaller than the sum of its proper divisors (16998270049818).

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

12201212243142 is a wasteful number, since it uses less digits than its factorization.

12201212243142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17380644245 (or 17380644239 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 27.

Adding to 12201212243142 its reverse (24134221210221), we get a palindrome (36335433453363).

The spelling of 12201212243142 in words is "twelve trillion, two hundred one billion, two hundred twelve million, two hundred forty-three thousand, one hundred forty-two".