12001002111100 has 36 divisors (see below), whose sum is σ = 26043590619144. Its totient is φ = 4800139823680.

The previous prime is 12001002111097. The next prime is 12001002111151. The reversal of 12001002111100 is 111120010021.

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

It is a congruent number.

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, 1409239 + ... + 5097838.

It is an arithmetic number, because the mean of its divisors is an integer number (723433072754).

Almost surely, 2^{12001002111100} is an apocalyptic number.

12001002111100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12001002111100 is an abundant number, since it is smaller than the sum of its proper divisors (14042588508044).

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

12001002111100 is a wasteful number, since it uses less digits than its factorization.

12001002111100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6525534 (or 6525527 counting only the distinct ones).

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

Adding to 12001002111100 its reverse (111120010021), we get a palindrome (12112122121121).

The spelling of 12001002111100 in words is "twelve trillion, one billion, two million, one hundred eleven thousand, one hundred".