20111124221001 has 12 divisors (see below), whose sum is σ = 31690256348400. Its totient is φ = 12188560133880.

The previous prime is 20111124220973. The next prime is 20111124221011. The reversal of 20111124221001 is 10012242111102.

20111124221001 is a `hidden beast` number, since 20 + 11 + 112 + 422 + 100 + 1 = 666.

It is not a de Polignac number, because 20111124221001 - 2⁶ = 20111124220937 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20111124221011) 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, 101571334351 + ... + 101571334548.

It is an arithmetic number, because the mean of its divisors is an integer number (2640854695700).

Almost surely, 2^{20111124221001} is an apocalyptic number.

It is an amenable number.

20111124221001 is a deficient number, since it is larger than the sum of its proper divisors (11579132127399).

20111124221001 is a wasteful number, since it uses less digits than its factorization.

20111124221001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 203142668916 (or 203142668913 counting only the distinct ones).

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

Adding to 20111124221001 its reverse (10012242111102), we get a palindrome (30123366332103).

The spelling of 20111124221001 in words is "twenty trillion, one hundred eleven billion, one hundred twenty-four million, two hundred twenty-one thousand, one".