20201000201121 has 16 divisors (see below), whose sum is σ = 27186614884800. Its totient is φ = 13341361549248.

The previous prime is 20201000201117. The next prime is 20201000201131. The reversal of 20201000201121 is 12110200010202.

It is not a de Polignac number, because 20201000201121 - 2² = 20201000201117 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20201000201097 and 20201000201106.

It is not an unprimeable number, because it can be changed into a prime (20201000201131) 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, 64360915 + ... + 64674023.

It is an arithmetic number, because the mean of its divisors is an integer number (1699163430300).

Almost surely, 2^{20201000201121} is an apocalyptic number.

It is an amenable number.

20201000201121 is a deficient number, since it is larger than the sum of its proper divisors (6985614683679).

20201000201121 is a wasteful number, since it uses less digits than its factorization.

20201000201121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 514208.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 20201000201121 its reverse (12110200010202), we get a palindrome (32311200211323).

The spelling of 20201000201121 in words is "twenty trillion, two hundred one billion, two hundred one thousand, one hundred twenty-one".