12211121022201 has 20 divisors (see below), whose sum is σ = 18498224029824. Its totient is φ = 8026088931000.

The previous prime is 12211121022187. The next prime is 12211121022277. The reversal of 12211121022201 is 10222012111221.

12211121022201 is a `hidden beast` number, since 1 + 221 + 11 + 210 + 2 + 220 + 1 = 666.

It is not a de Polignac number, because 12211121022201 - 2⁵ = 12211121022169 is a prime.

It is a super-2 number, since 2×12211121022201² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12211120022201) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 1061646225 + ... + 1061657726.

Almost surely, 2^{12211121022201} is an apocalyptic number.

It is an amenable number.

12211121022201 is a deficient number, since it is larger than the sum of its proper divisors (6287103007623).

12211121022201 is an equidigital number, since it uses as much as digits as its factorization.

12211121022201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2123304034 (or 2123304025 counting only the distinct ones).

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

Adding to 12211121022201 its reverse (10222012111221), we get a palindrome (22433133133422).

The spelling of 12211121022201 in words is "twelve trillion, two hundred eleven billion, one hundred twenty-one million, twenty-two thousand, two hundred one".