981221132 has 12 divisors (see below), whose sum is σ = 1717940280. Its totient is φ = 490381056.

The previous prime is 981221077. The next prime is 981221183. The reversal of 981221132 is 231122189.

It is a super-2 number, since 2×981221132² = 1925589819766722848, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 981221095 and 981221104.

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, 47573 + ... + 65004.

It is an arithmetic number, because the mean of its divisors is an integer number (143161690).

Almost surely, 2^981221132 is an apocalyptic number.

It is an amenable number.

981221132 is a deficient number, since it is larger than the sum of its proper divisors (736719148).

981221132 is a wasteful number, since it uses less digits than its factorization.

981221132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114760 (or 114758 counting only the distinct ones).

The product of its digits is 1728, while the sum is 29.

The square root of 981221132 is about 31324.4494285215. The cubic root of 981221132 is about 993.7007804849.

The spelling of 981221132 in words is "nine hundred eighty-one million, two hundred twenty-one thousand, one hundred thirty-two".