20112102012111 has 8 divisors (see below), whose sum is σ = 27053446954800. Its totient is φ = 13289412538752.

The previous prime is 20112102012103. The next prime is 20112102012127. The reversal of 20112102012111 is 11121020121102.

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 20112102012111 - 2³ = 20112102012103 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20112102012151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29663866936 + ... + 29663867613.

It is an arithmetic number, because the mean of its divisors is an integer number (3381680869350).

Almost surely, 2^{20112102012111} is an apocalyptic number.

20112102012111 is a deficient number, since it is larger than the sum of its proper divisors (6941344942689).

20112102012111 is a wasteful number, since it uses less digits than its factorization.

20112102012111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59327734665.

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

Adding to 20112102012111 its reverse (11121020121102), we get a palindrome (31233122133213).

The spelling of 20112102012111 in words is "twenty trillion, one hundred twelve billion, one hundred two million, twelve thousand, one hundred eleven".