20010112112101 has 4 divisors (see below), whose sum is σ = 20011712549472. Its totient is φ = 20008511674732.

The previous prime is 20010112112041. The next prime is 20010112112113. The reversal of 20010112112101 is 10121121101002.

It is a happy number.

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 a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20010112112101 is a prime.

It is a super-2 number, since 2×20010112112101² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20010112112191) 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, 800199931 + ... + 800224936.

It is an arithmetic number, because the mean of its divisors is an integer number (5002928137368).

Almost surely, 2^{20010112112101} is an apocalyptic number.

It is an amenable number.

20010112112101 is a deficient number, since it is larger than the sum of its proper divisors (1600437371).

20010112112101 is a wasteful number, since it uses less digits than its factorization.

20010112112101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1600437370.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 20010112112101 its reverse (10121121101002), we get a palindrome (30131233213103).

The spelling of 20010112112101 in words is "twenty trillion, ten billion, one hundred twelve million, one hundred twelve thousand, one hundred one".