1200240012 has 54 divisors (see below), whose sum is σ = 2860326588. Its totient is φ = 391719168.

The previous prime is 1200240011. The next prime is 1200240017. The reversal of 1200240012 is 2100420021.

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 1200240012.

It is not an unprimeable number, because it can be changed into a prime (1200240011) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 8760808 + ... + 8760944.

Almost surely, 2^1200240012 is an apocalyptic number.

1200240012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1200240012 is an abundant number, since it is smaller than the sum of its proper divisors (1660086576).

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

1200240012 is an equidigital number, since it uses as much as digits as its factorization.

1200240012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 427 (or 215 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 12.

The square root of 1200240012 is about 34644.4802529927. The cubic root of 1200240012 is about 1062.7294119065.

Multiplying 1200240012 by its sum of digits (12), we get a square (14402880144 = 120012²).

1200240012 divided by its sum of digits (12) gives a palindrome (100020001).

Adding to 1200240012 its reverse (2100420021), we get a palindrome (3300660033).

Subtracting 1200240012 from its reverse (2100420021), we obtain a square (900180009 = 30003²).

The spelling of 1200240012 in words is "one billion, two hundred million, two hundred forty thousand, twelve".