20111210100102 has 32 divisors (see below), whose sum is σ = 43881109050240. Its totient is φ = 6094013702720.

The previous prime is 20111210100067. The next prime is 20111210100119. The reversal of 20111210100102 is 20100101211102.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5921652 + ... + 8676887.

It is an arithmetic number, because the mean of its divisors is an integer number (1371284657820).

Almost surely, 2^{20111210100102} is an apocalyptic number.

20111210100102 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

20111210100102 is an abundant number, since it is smaller than the sum of its proper divisors (23769898950138).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20111210100102 is a wasteful number, since it uses less digits than its factorization.

20111210100102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14619428.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 20111210100102 its reverse (20100101211102), we get a palindrome (40211311311204).

The spelling of 20111210100102 in words is "twenty trillion, one hundred eleven billion, two hundred ten million, one hundred thousand, one hundred two".