20111214111 has 8 divisors (see below), whose sum is σ = 26850191664. Its totient is φ = 13389856320.

The previous prime is 20111214103. The next prime is 20111214143. The reversal of 20111214111 is 11141211102.

It is a happy number.

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

It is not a de Polignac number, because 20111214111 - 2³ = 20111214103 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20111214511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4402276 + ... + 4406841.

It is an arithmetic number, because the mean of its divisors is an integer number (3356273958).

Almost surely, 2^20111214111 is an apocalyptic number.

20111214111 is a deficient number, since it is larger than the sum of its proper divisors (6738977553).

20111214111 is an equidigital number, since it uses as much as digits as its factorization.

20111214111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8809881.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 20111214111 its reverse (11141211102), we get a palindrome (31252425213).

The spelling of 20111214111 in words is "twenty billion, one hundred eleven million, two hundred fourteen thousand, one hundred eleven".