20120012110121 has 16 divisors (see below), whose sum is σ = 25097127250560. Its totient is φ = 15670158497280.

The previous prime is 20120012110117. The next prime is 20120012110153. The reversal of 20120012110121 is 12101121002102.

It is not a de Polignac number, because 20120012110121 - 2² = 20120012110117 is a prime.

It is a super-2 number, since 2×20120012110121² (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 = 20120012110096 and 20120012110105.

It is not an unprimeable number, because it can be changed into a prime (20120012110171) 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, 64618826 + ... + 64929443.

It is an arithmetic number, because the mean of its divisors is an integer number (1568570453160).

Almost surely, 2^{20120012110121} is an apocalyptic number.

It is an amenable number.

20120012110121 is a deficient number, since it is larger than the sum of its proper divisors (4977115140439).

20120012110121 is a wasteful number, since it uses less digits than its factorization.

20120012110121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129550304.

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

Adding to 20120012110121 its reverse (12101121002102), we get a palindrome (32221133112223).

It can be divided in two parts, 201200 and 12110121, that added together give a palindrome (12311321).

The spelling of 20120012110121 in words is "twenty trillion, one hundred twenty billion, twelve million, one hundred ten thousand, one hundred twenty-one".