20330112121 has 16 divisors (see below), whose sum is σ = 23123773440. Its totient is φ = 17704068480.

The previous prime is 20330112109. The next prime is 20330112163. The reversal of 20330112121 is 12121103302.

It is not a de Polignac number, because 20330112121 - 2²⁵ = 20296557689 is a prime.

It is a super-2 number, since 2×20330112121² (a number of 21 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 = 20330112095 and 20330112104.

It is not an unprimeable number, because it can be changed into a prime (20330112421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 210396 + ... + 291421.

It is an arithmetic number, because the mean of its divisors is an integer number (1445235840).

Almost surely, 2^20330112121 is an apocalyptic number.

It is an amenable number.

20330112121 is a deficient number, since it is larger than the sum of its proper divisors (2793661319).

20330112121 is a wasteful number, since it uses less digits than its factorization.

20330112121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 501984.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 20330112121 its reverse (12121103302), we get a palindrome (32451215423).

The spelling of 20330112121 in words is "twenty billion, three hundred thirty million, one hundred twelve thousand, one hundred twenty-one".