1200216372 has 12 divisors (see below), whose sum is σ = 2800504896. Its totient is φ = 400072120.

The previous prime is 1200216361. The next prime is 1200216379. The reversal of 1200216372 is 2736120021.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1200216379) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50009004 + ... + 50009027.

It is an arithmetic number, because the mean of its divisors is an integer number (233375408).

Almost surely, 2^1200216372 is an apocalyptic number.

1200216372 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1200216372 is an abundant number, since it is smaller than the sum of its proper divisors (1600288524).

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

1200216372 is a wasteful number, since it uses less digits than its factorization.

1200216372 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100018038 (or 100018036 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 24.

The square root of 1200216372 is about 34644.1390714216. The cubic root of 1200216372 is about 1062.7224346664.

Adding to 1200216372 its reverse (2736120021), we get a palindrome (3936336393).

The spelling of 1200216372 in words is "one billion, two hundred million, two hundred sixteen thousand, three hundred seventy-two".