20201101211121 has 8 divisors (see below), whose sum is σ = 26951667495744. Its totient is φ = 13458967866960.

The previous prime is 20201101211113. The next prime is 20201101211183. The reversal of 20201101211121 is 12111210110202.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20201101211121 - 2³ = 20201101211113 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20201101211121.

It is not an unprimeable number, because it can be changed into a prime (20201101212121) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2108229525 + ... + 2108239106.

It is an arithmetic number, because the mean of its divisors is an integer number (3368958436968).

Almost surely, 2^{20201101211121} is an apocalyptic number.

It is an amenable number.

20201101211121 is a deficient number, since it is larger than the sum of its proper divisors (6750566284623).

20201101211121 is a wasteful number, since it uses less digits than its factorization.

20201101211121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4216470231.

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

Adding to 20201101211121 its reverse (12111210110202), we get a palindrome (32312311321323).

The spelling of 20201101211121 in words is "twenty trillion, two hundred one billion, one hundred one million, two hundred eleven thousand, one hundred twenty-one".