21301220982 has 16 divisors (see below), whose sum is σ = 42604426800. Its totient is φ = 7100076192.

The previous prime is 21301220959. The next prime is 21301221001. The reversal of 21301220982 is 28902210312.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 82068 + ... + 222120.

It is an arithmetic number, because the mean of its divisors is an integer number (2662776675).

Almost surely, 2^21301220982 is an apocalyptic number.

21301220982 is an abundant number, since it is smaller than the sum of its proper divisors (21303205818).

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

21301220982 is a wasteful number, since it uses less digits than its factorization.

21301220982 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 165407.

The product of its (nonzero) digits is 3456, while the sum is 30.

The spelling of 21301220982 in words is "twenty-one billion, three hundred one million, two hundred twenty thousand, nine hundred eighty-two".