1200012132 has 48 divisors (see below), whose sum is σ = 3058138944. Its totient is φ = 363216000.

The previous prime is 1200012101. The next prime is 1200012173. The reversal of 1200012132 is 2312100021.

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

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, 119382 + ... + 129042.

It is an arithmetic number, because the mean of its divisors is an integer number (63711228).

Almost surely, 2^1200012132 is an apocalyptic number.

1200012132 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1200012132 is an abundant number, since it is smaller than the sum of its proper divisors (1858126812).

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

1200012132 is a wasteful number, since it uses less digits than its factorization.

1200012132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10620 (or 10618 counting only the distinct ones).

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

The square root of 1200012132 is about 34641.1912612716. The cubic root of 1200012132 is about 1062.6621503299.

Adding to 1200012132 its reverse (2312100021), we get a palindrome (3512112153).

The spelling of 1200012132 in words is "one billion, two hundred million, twelve thousand, one hundred thirty-two".