1201320012 has 24 divisors (see below), whose sum is σ = 2899738800. Its totient is φ = 386631616.

The previous prime is 1201319947. The next prime is 1201320019. The reversal of 1201320012 is 2100231021.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a self number, because there is not a number n which added to its sum of digits gives 1201320012.

It is not an unprimeable number, because it can be changed into a prime (1201320019) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1725687 + ... + 1726382.

It is an arithmetic number, because the mean of its divisors is an integer number (120822450).

Almost surely, 2^1201320012 is an apocalyptic number.

1201320012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1201320012 is an abundant number, since it is smaller than the sum of its proper divisors (1698418788).

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

1201320012 is a wasteful number, since it uses less digits than its factorization.

1201320012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3452105 (or 3452103 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 1201320012 is about 34660.0636467967. The cubic root of 1201320012 is about 1063.0480714163.

Adding to 1201320012 its reverse (2100231021), we get a palindrome (3301551033).

The spelling of 1201320012 in words is "one billion, two hundred one million, three hundred twenty thousand, twelve".