12201201212004 has 144 divisors (see below), whose sum is σ = 36465526581120. Its totient is φ = 3365648616960.

The previous prime is 12201201211993. The next prime is 12201201212047. The reversal of 12201201212004 is 40021210210221.

12201201212004 is a `hidden beast` number, since 1 + 220 + 120 + 121 + 200 + 4 = 666.

It is a super-2 number, since 2×12201201212004² (a number of 27 digits) contains 22 as substring.

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

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 156944287 + ... + 157022009.

It is an arithmetic number, because the mean of its divisors is an integer number (253232823480).

Almost surely, 2^{12201201212004} is an apocalyptic number.

12201201212004 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12201201212004, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18232763290560).

12201201212004 is an abundant number, since it is smaller than the sum of its proper divisors (24264325369116).

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

12201201212004 is a wasteful number, since it uses less digits than its factorization.

12201201212004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99250 (or 99245 counting only the distinct ones).

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

Adding to 12201201212004 its reverse (40021210210221), we get a palindrome (52222411422225).

The spelling of 12201201212004 in words is "twelve trillion, two hundred one billion, two hundred one million, two hundred twelve thousand, four".