12201112201212 has 72 divisors (see below), whose sum is σ = 33654822993792. Its totient is φ = 3696281258400.

The previous prime is 12201112201189. The next prime is 12201112201217. The reversal of 12201112201212 is 21210221110221.

12201112201212 is a `hidden beast` number, since 1 + 220 + 1 + 11 + 220 + 1 + 212 = 666.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12201112201217) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2842614 + ... + 5699357.

It is an arithmetic number, because the mean of its divisors is an integer number (467428097136).

Almost surely, 2^{12201112201212} is an apocalyptic number.

12201112201212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12201112201212 is an abundant number, since it is smaller than the sum of its proper divisors (21453710792580).

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

12201112201212 is a wasteful number, since it uses less digits than its factorization.

12201112201212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8545599 (or 8545594 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 12201112201212 its reverse (21210221110221), we get a palindrome (33411333311433).

The spelling of 12201112201212 in words is "twelve trillion, two hundred one billion, one hundred twelve million, two hundred one thousand, two hundred twelve".