20111100011 has 8 divisors (see below), whose sum is σ = 21327337584. Its totient is φ = 18898554880.

The previous prime is 20111099989. The next prime is 20111100029. The reversal of 20111100011 is 11000111102.

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 20111100011 - 2¹⁸ = 20110837867 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20111100041) 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, 911885 + ... + 933678.

It is an arithmetic number, because the mean of its divisors is an integer number (2665917198).

Almost surely, 2^20111100011 is an apocalyptic number.

20111100011 is a deficient number, since it is larger than the sum of its proper divisors (1216237573).

20111100011 is a wasteful number, since it uses less digits than its factorization.

20111100011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1846221.

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

Adding to 20111100011 its reverse (11000111102), we get a palindrome (31111211113).

The spelling of 20111100011 in words is "twenty billion, one hundred eleven million, one hundred thousand, eleven".