12102111100 has 18 divisors (see below), whose sum is σ = 26261581304. Its totient is φ = 4840844400.

The previous prime is 12102111083. The next prime is 12102111101. The reversal of 12102111100 is 111120121.

It is a super-2 number, since 2×12102111100² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12102111101) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 60510456 + ... + 60510655.

Almost surely, 2^12102111100 is an apocalyptic number.

12102111100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12102111100 is an abundant number, since it is smaller than the sum of its proper divisors (14159470204).

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

12102111100 is a wasteful number, since it uses less digits than its factorization.

12102111100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121021125 (or 121021118 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 12102111100 its reverse (111120121), we get a palindrome (12213231221).

The spelling of 12102111100 in words is "twelve billion, one hundred two million, one hundred eleven thousand, one hundred".