20112102021121 has 16 divisors (see below), whose sum is σ = 23016719721600. Its totient is φ = 17404618268800.

The previous prime is 20112102021119. The next prime is 20112102021169. The reversal of 20112102021121 is 12112020121102.

It is a cyclic number.

It is not a de Polignac number, because 20112102021121 - 2¹ = 20112102021119 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20112102021095 and 20112102021104.

It is not an unprimeable number, because it can be changed into a prime (20112102021191) 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, 443972716 + ... + 444018013.

It is an arithmetic number, because the mean of its divisors is an integer number (1438544982600).

Almost surely, 2^{20112102021121} is an apocalyptic number.

It is an amenable number.

20112102021121 is a deficient number, since it is larger than the sum of its proper divisors (2904617700479).

20112102021121 is a wasteful number, since it uses less digits than its factorization.

20112102021121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 887990840.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 20112102021121 its reverse (12112020121102), we get a palindrome (32224122142223).

The spelling of 20112102021121 in words is "twenty trillion, one hundred twelve billion, one hundred two million, twenty-one thousand, one hundred twenty-one".