1213200132 has 12 divisors (see below), whose sum is σ = 2830800336. Its totient is φ = 404400040.

The previous prime is 1213200083. The next prime is 1213200137. The reversal of 1213200132 is 2310023121.

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

It is not an unprimeable number, because it can be changed into a prime (1213200137) 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, 50549994 + ... + 50550017.

It is an arithmetic number, because the mean of its divisors is an integer number (235900028).

Almost surely, 2^1213200132 is an apocalyptic number.

1213200132 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1213200132 is an abundant number, since it is smaller than the sum of its proper divisors (1617600204).

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

1213200132 is a wasteful number, since it uses less digits than its factorization.

1213200132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101100018 (or 101100016 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 1213200132 is about 34831.0225517426. The cubic root of 1213200132 is about 1066.5408224366.

Adding to 1213200132 its reverse (2310023121), we get a palindrome (3523223253).

The spelling of 1213200132 in words is "one billion, two hundred thirteen million, two hundred thousand, one hundred thirty-two".