20111110001 has 8 divisors (see below), whose sum is σ = 21193285824. Its totient is φ = 19046249200.

The previous prime is 20111109971. The next prime is 20111110003. The reversal of 20111110001 is 10001111102.

It is a happy number.

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 20111110001 - 2¹⁰ = 20111108977 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20111110003) 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, 4326371 + ... + 4331016.

It is an arithmetic number, because the mean of its divisors is an integer number (2649160728).

Almost surely, 2^20111110001 is an apocalyptic number.

It is an amenable number.

20111110001 is a deficient number, since it is larger than the sum of its proper divisors (1082175823).

20111110001 is a wasteful number, since it uses less digits than its factorization.

20111110001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8657511.

The product of its (nonzero) digits is 2, while the sum is 8.

Adding to 20111110001 its reverse (10001111102), we get a palindrome (30112221103).

It can be divided in two parts, 201111 and 10001, that added together give a palindrome (211112).

The spelling of 20111110001 in words is "twenty billion, one hundred eleven million, one hundred ten thousand, one".