20011112120101 has 8 divisors (see below), whose sum is σ = 20808410321880. Its totient is φ = 19220964575232.

The previous prime is 20011112120059. The next prime is 20011112120147. The reversal of 20011112120101 is 10102121111002.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 850803312100 + 19160308808001 = 922390^2 + 4377249^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 20011112120101 - 2³³ = 20002522185509 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 (20011112120191) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1787658520 + ... + 1787669713.

It is an arithmetic number, because the mean of its divisors is an integer number (2601051290235).

Almost surely, 2^{20011112120101} is an apocalyptic number.

It is an amenable number.

20011112120101 is a deficient number, since it is larger than the sum of its proper divisors (797298201779).

20011112120101 is a wasteful number, since it uses less digits than its factorization.

20011112120101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3575328455.

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

Adding to 20011112120101 its reverse (10102121111002), we get a palindrome (30113233231103).

The spelling of 20011112120101 in words is "twenty trillion, eleven billion, one hundred twelve million, one hundred twenty thousand, one hundred one".