21112011110201 has 8 divisors (see below), whose sum is σ = 23031674711424. Its totient is φ = 19192412486320.

The previous prime is 21112011110191. The next prime is 21112011110233. The reversal of 21112011110201 is 10201111021112.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21112011110201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21112011112201) 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, 15563726 + ... + 16865751.

It is an arithmetic number, because the mean of its divisors is an integer number (2878959338928).

Almost surely, 2^{21112011110201} is an apocalyptic number.

It is an amenable number.

21112011110201 is a deficient number, since it is larger than the sum of its proper divisors (1919663601223).

21112011110201 is a wasteful number, since it uses less digits than its factorization.

21112011110201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32488671.

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 21112011110201 its reverse (10201111021112), we get a palindrome (31313122131313).

It can be divided in two parts, 21112011 and 110201, that added together give a palindrome (21222212).

The spelling of 21112011110201 in words is "twenty-one trillion, one hundred twelve billion, eleven million, one hundred ten thousand, two hundred one".