982120021 has 8 divisors (see below), whose sum is σ = 1026636800. Its totient is φ = 938405520.

The previous prime is 982120019. The next prime is 982120049. The reversal of 982120021 is 120021289.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 982120021 - 2¹ = 982120019 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (982120121) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 198066 + ... + 202963.

It is an arithmetic number, because the mean of its divisors is an integer number (128329600).

Almost surely, 2^982120021 is an apocalyptic number.

It is an amenable number.

982120021 is a deficient number, since it is larger than the sum of its proper divisors (44516779).

982120021 is a wasteful number, since it uses less digits than its factorization.

982120021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 401139.

The product of its (nonzero) digits is 576, while the sum is 25.

The square root of 982120021 is about 31338.7941854820. The cubic root of 982120021 is about 994.0041283749.

The spelling of 982120021 in words is "nine hundred eighty-two million, one hundred twenty thousand, twenty-one".