20001012112101 has 4 divisors (see below), whose sum is σ = 26668016149472. Its totient is φ = 13334008074732.

The previous prime is 20001012112093. The next prime is 20001012112111. The reversal of 20001012112101 is 10121121010002.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 20001012112101 - 2³ = 20001012112093 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20001012112111) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3333502018681 + ... + 3333502018686.

It is an arithmetic number, because the mean of its divisors is an integer number (6667004037368).

Almost surely, 2^{20001012112101} is an apocalyptic number.

It is an amenable number.

20001012112101 is a deficient number, since it is larger than the sum of its proper divisors (6667004037371).

20001012112101 is an equidigital number, since it uses as much as digits as its factorization.

20001012112101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6667004037370.

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

Adding to 20001012112101 its reverse (10121121010002), we get a palindrome (30122133122103).

The spelling of 20001012112101 in words is "twenty trillion, one billion, twelve million, one hundred twelve thousand, one hundred one".