12120001012 has 48 divisors (see below), whose sum is σ = 25725869568. Its totient is φ = 4877314560.

The previous prime is 12120000983. The next prime is 12120001051. The reversal of 12120001012 is 21010002121.

It is a self number, because there is not a number n which added to its sum of digits gives 12120001012.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 175618 + ... + 234694.

It is an arithmetic number, because the mean of its divisors is an integer number (535955616).

Almost surely, 2^12120001012 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12120001012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12862934784).

12120001012 is an abundant number, since it is smaller than the sum of its proper divisors (13605868556).

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

12120001012 is a wasteful number, since it uses less digits than its factorization.

12120001012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59536 (or 59534 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 12120001012 its reverse (21010002121), we get a palindrome (33130003133).

The spelling of 12120001012 in words is "twelve billion, one hundred twenty million, one thousand, twelve".