20111200112102 has 64 divisors (see below), whose sum is σ = 35619462236160. Its totient is φ = 8419846512000.

The previous prime is 20111200112063. The next prime is 20111200112173. The reversal of 20111200112102 is 20121100211102.

It is a super-2 number, since 2×20111200112102² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 3636227 + ... + 7310577.

It is an arithmetic number, because the mean of its divisors is an integer number (556554097440).

Almost surely, 2^{20111200112102} is an apocalyptic number.

20111200112102 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

20111200112102 is a deficient number, since it is larger than the sum of its proper divisors (15508262124058).

20111200112102 is a wasteful number, since it uses less digits than its factorization.

20111200112102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3674789.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 20111200112102 its reverse (20121100211102), we get a palindrome (40232300323204).

The spelling of 20111200112102 in words is "twenty trillion, one hundred eleven billion, two hundred million, one hundred twelve thousand, one hundred two".