20113100121021 has 8 divisors (see below), whose sum is σ = 26832113185344. Its totient is φ = 13401410235360.

The previous prime is 20113100121007. The next prime is 20113100121041. The reversal of 20113100121021 is 12012100131102.

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

It is not a de Polignac number, because 20113100121021 - 2¹⁴ = 20113100104637 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20113100121001) 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, 1830788256 + ... + 1830799241.

It is an arithmetic number, because the mean of its divisors is an integer number (3354014148168).

Almost surely, 2^{20113100121021} is an apocalyptic number.

It is an amenable number.

20113100121021 is a deficient number, since it is larger than the sum of its proper divisors (6719013064323).

20113100121021 is a wasteful number, since it uses less digits than its factorization.

20113100121021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3661589331.

The product of its (nonzero) digits is 24, while the sum is 15.

Adding to 20113100121021 its reverse (12012100131102), we get a palindrome (32125200252123).

The spelling of 20113100121021 in words is "twenty trillion, one hundred thirteen billion, one hundred million, one hundred twenty-one thousand, twenty-one".