12101112121100 has 36 divisors (see below), whose sum is σ = 26261439342600. Its totient is φ = 4840071384960.

The previous prime is 12101112121097. The next prime is 12101112121121. The reversal of 12101112121100 is 112121110121.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3363905 + ... + 5959704.

Almost surely, 2^{12101112121100} is an apocalyptic number.

12101112121100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12101112121100 is an abundant number, since it is smaller than the sum of its proper divisors (14160327221500).

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

12101112121100 is a wasteful number, since it uses less digits than its factorization.

12101112121100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9336602 (or 9336595 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 12101112121100 its reverse (112121110121), we get a palindrome (12213233231221).

The spelling of 12101112121100 in words is "twelve trillion, one hundred one billion, one hundred twelve million, one hundred twenty-one thousand, one hundred".