20110012021121 has 8 divisors (see below), whose sum is σ = 21938322028800. Its totient is φ = 18281723196240.

The previous prime is 20110012021111. The next prime is 20110012021139. The reversal of 20110012021121 is 12112021001102.

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

It is a cyclic number.

It is not a de Polignac number, because 20110012021121 - 2²⁶ = 20109944912257 is a prime.

It is a super-2 number, since 2×20110012021121² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20110012021096 and 20110012021105.

It is not an unprimeable number, because it can be changed into a prime (20110012021111) 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, 3277226 + ... + 7138643.

It is an arithmetic number, because the mean of its divisors is an integer number (2742290253600).

Almost surely, 2^{20110012021121} is an apocalyptic number.

It is an amenable number.

20110012021121 is a deficient number, since it is larger than the sum of its proper divisors (1828310007679).

20110012021121 is a wasteful number, since it uses less digits than its factorization.

20110012021121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10591399.

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

Adding to 20110012021121 its reverse (12112021001102), we get a palindrome (32222033022223).

It can be divided in two parts, 201100 and 12021121, that added together give a palindrome (12222221).

The spelling of 20110012021121 in words is "twenty trillion, one hundred ten billion, twelve million, twenty-one thousand, one hundred twenty-one".