12201120112221 has 12 divisors (see below), whose sum is σ = 18100160166972. Its totient is φ = 7914240072576.

The previous prime is 12201120112201. The next prime is 12201120112231. The reversal of 12201120112221 is 12221102110221.

12201120112221 is a `hidden beast` number, since 1 + 220 + 11 + 201 + 12 + 221 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 8216185899321 + 3984934212900 = 2866389^2 + 1996230^2 .

It is not a de Polignac number, because 12201120112221 - 2⁹ = 12201120111709 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12201120112194 and 12201120112203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12201120112201) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 18319999836 + ... + 18320000501.

It is an arithmetic number, because the mean of its divisors is an integer number (1508346680581).

Almost surely, 2^{12201120112221} is an apocalyptic number.

It is an amenable number.

12201120112221 is a deficient number, since it is larger than the sum of its proper divisors (5899040054751).

12201120112221 is a wasteful number, since it uses less digits than its factorization.

12201120112221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36640000380 (or 36640000377 counting only the distinct ones).

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

Adding to 12201120112221 its reverse (12221102110221), we get a palindrome (24422222222442).

The spelling of 12201120112221 in words is "twelve trillion, two hundred one billion, one hundred twenty million, one hundred twelve thousand, two hundred twenty-one".