20010112112121 has 8 divisors (see below), whose sum is σ = 26701042322304. Its totient is φ = 13329628321680.

The previous prime is 20010112112113. The next prime is 20010112112183. The reversal of 20010112112121 is 12121121101002.

It is a happy number.

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

It is not a de Polignac number, because 20010112112121 - 2³ = 20010112112113 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20010112112121.

It is not an unprimeable number, because it can be changed into a prime (20010112112191) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2611600465 + ... + 2611608126.

It is an arithmetic number, because the mean of its divisors is an integer number (3337630290288).

Almost surely, 2^{20010112112121} is an apocalyptic number.

It is an amenable number.

20010112112121 is a deficient number, since it is larger than the sum of its proper divisors (6690930210183).

20010112112121 is a wasteful number, since it uses less digits than its factorization.

20010112112121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5223209871.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 20010112112121 its reverse (12121121101002), we get a palindrome (32131233213123).

The spelling of 20010112112121 in words is "twenty trillion, ten billion, one hundred twelve million, one hundred twelve thousand, one hundred twenty-one".