12211120211001 has 32 divisors (see below), whose sum is σ = 17151581990400. Its totient is φ = 7719402228480.

The previous prime is 12211120210973. The next prime is 12211120211033. The reversal of 12211120211001 is 10011202111221.

It is a happy number.

It is not a de Polignac number, because 12211120211001 - 2⁷ = 12211120210873 is a prime.

It is a super-4 number, since 4×12211120211001⁴ (a number of 53 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (12211120211201) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7534641 + ... + 9010718.

It is an arithmetic number, because the mean of its divisors is an integer number (535986937200).

Almost surely, 2^{12211120211001} is an apocalyptic number.

It is an amenable number.

12211120211001 is a deficient number, since it is larger than the sum of its proper divisors (4940461779399).

12211120211001 is a wasteful number, since it uses less digits than its factorization.

12211120211001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16545569.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 12211120211001 its reverse (10011202111221), we get a palindrome (22222322322222).

The spelling of 12211120211001 in words is "twelve trillion, two hundred eleven billion, one hundred twenty million, two hundred eleven thousand, one".