1191210132 has 48 divisors (see below), whose sum is σ = 3178248192. Its totient is φ = 340164960.

The previous prime is 1191210101. The next prime is 1191210143. The reversal of 1191210132 is 2310121911.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a junction number, because it is equal to n+sod(n) for n = 1191210099 and 1191210108.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 306433 + ... + 310295.

It is an arithmetic number, because the mean of its divisors is an integer number (66213504).

Almost surely, 2^1191210132 is an apocalyptic number.

1191210132 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1191210132 is an abundant number, since it is smaller than the sum of its proper divisors (1987038060).

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

1191210132 is a wasteful number, since it uses less digits than its factorization.

1191210132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7548 (or 7546 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 21.

The square root of 1191210132 is about 34513.9121514789. The cubic root of 1191210132 is about 1060.0575891341.

The spelling of 1191210132 in words is "one billion, one hundred ninety-one million, two hundred ten thousand, one hundred thirty-two".