20001122111201 has 16 divisors (see below), whose sum is σ = 24936569100288. Its totient is φ = 15585224226000.

The previous prime is 20001122111161. The next prime is 20001122111237. The reversal of 20001122111201 is 10211122110002.

It is not a de Polignac number, because 20001122111201 - 2⁶ = 20001122111137 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20001122111101) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26348696 + ... + 27097158.

It is an arithmetic number, because the mean of its divisors is an integer number (1558535568768).

Almost surely, 2^{20001122111201} is an apocalyptic number.

It is an amenable number.

20001122111201 is a deficient number, since it is larger than the sum of its proper divisors (4935446989087).

20001122111201 is a wasteful number, since it uses less digits than its factorization.

20001122111201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1095532.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 20001122111201 its reverse (10211122110002), we get a palindrome (30212244221203).

The spelling of 20001122111201 in words is "twenty trillion, one billion, one hundred twenty-two million, one hundred eleven thousand, two hundred one".