987221132 has 12 divisors (see below), whose sum is σ = 1787210880. Its totient is φ = 476589456.

The previous prime is 987221119. The next prime is 987221141. The reversal of 987221132 is 231122789.

It is a super-2 number, since 2×987221132² = 1949211126934722848, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 987221092 and 987221101.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4255148 + ... + 4255379.

It is an arithmetic number, because the mean of its divisors is an integer number (148934240).

Almost surely, 2^987221132 is an apocalyptic number.

It is an amenable number.

987221132 is a deficient number, since it is larger than the sum of its proper divisors (799989748).

987221132 is a wasteful number, since it uses less digits than its factorization.

987221132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8510560 (or 8510558 counting only the distinct ones).

The product of its digits is 12096, while the sum is 35.

The square root of 987221132 is about 31420.0753022650. The cubic root of 987221132 is about 995.7221030266.

The spelling of 987221132 in words is "nine hundred eighty-seven million, two hundred twenty-one thousand, one hundred thirty-two".