12101212111100 has 36 divisors (see below), whose sum is σ = 30011006037264. Its totient is φ = 4148987009280.

The previous prime is 12101212111097. The next prime is 12101212111111. The reversal of 12101212111100 is 111121210121.

It is a Harshad number since it is a multiple of its sum of digits (14).

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 11 ways as a sum of consecutive naturals, for example, 8643722237 + ... + 8643723636.

Almost surely, 2^{12101212111100} is an apocalyptic number.

12101212111100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12101212111100 is an abundant number, since it is smaller than the sum of its proper divisors (17909793926164).

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

12101212111100 is a wasteful number, since it uses less digits than its factorization.

12101212111100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17287445894 (or 17287445887 counting only the distinct ones).

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

Adding to 12101212111100 its reverse (111121210121), we get a palindrome (12212333321221).

The spelling of 12101212111100 in words is "twelve trillion, one hundred one billion, two hundred twelve million, one hundred eleven thousand, one hundred".