20001201110121 has 64 divisors (see below), whose sum is σ = 33320723521536. Its totient is φ = 10367759462400.

The previous prime is 20001201110071. The next prime is 20001201110123. The reversal of 20001201110121 is 12101110210002.

It is not a de Polignac number, because 20001201110121 - 2⁶ = 20001201110057 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20001201110097 and 20001201110106.

It is not an unprimeable number, because it can be changed into a prime (20001201110123) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 295986480 + ... + 296054046.

It is an arithmetic number, because the mean of its divisors is an integer number (520636305024).

Almost surely, 2^{20001201110121} is an apocalyptic number.

20001201110121 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

20001201110121 is a deficient number, since it is larger than the sum of its proper divisors (13319522411415).

20001201110121 is a wasteful number, since it uses less digits than its factorization.

20001201110121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70342.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 20001201110121 its reverse (12101110210002), we get a palindrome (32102311320123).

The spelling of 20001201110121 in words is "twenty trillion, one billion, two hundred one million, one hundred ten thousand, one hundred twenty-one".