20120010101121 has 16 divisors (see below), whose sum is σ = 32272697907200. Its totient is φ = 10892035543248.

The previous prime is 20120010101021. The next prime is 20120010101123. The reversal of 20120010101121 is 12110101002102.

It is not a de Polignac number, because 20120010101121 - 2¹¹ = 20120010099073 is a prime.

It is a super-2 number, since 2×20120010101121² (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 = 20120010101097 and 20120010101106.

It is not an unprimeable number, because it can be changed into a prime (20120010101123) 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, 25213044841 + ... + 25213045638.

It is an arithmetic number, because the mean of its divisors is an integer number (2017043619200).

Almost surely, 2^{20120010101121} is an apocalyptic number.

20120010101121 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

20120010101121 is a deficient number, since it is larger than the sum of its proper divisors (12152687806079).

20120010101121 is a wasteful number, since it uses less digits than its factorization.

20120010101121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50426090508.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 20120010101121 its reverse (12110101002102), we get a palindrome (32230111103223).

The spelling of 20120010101121 in words is "twenty trillion, one hundred twenty billion, ten million, one hundred one thousand, one hundred twenty-one".