12013001100 has 108 divisors (see below), whose sum is σ = 37694879040. Its totient is φ = 3199996800.

The previous prime is 12013001089. The next prime is 12013001101. The reversal of 12013001100 is 110031021.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is not an unprimeable number, because it can be changed into a prime (12013001101) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 885166 + ... + 898634.

Almost surely, 2^12013001100 is an apocalyptic number.

12013001100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12013001100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18847439520).

12013001100 is an abundant number, since it is smaller than the sum of its proper divisors (25681877940).

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

12013001100 is a wasteful number, since it uses less digits than its factorization.

12013001100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14480 (or 14470 counting only the distinct ones).

The product of its (nonzero) digits is 6, while the sum is 9.

Adding to 12013001100 its reverse (110031021), we get a palindrome (12123032121).

The spelling of 12013001100 in words is "twelve billion, thirteen million, one thousand, one hundred".