21101011010982 has 48 divisors (see below), whose sum is σ = 52254009448992. Its totient is φ = 6028411795200.

The previous prime is 21101011010969. The next prime is 21101011011001. The reversal of 21101011010982 is 28901011010112.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4526769 + ... + 7917932.

It is an arithmetic number, because the mean of its divisors is an integer number (1088625196854).

Almost surely, 2^{21101011010982} is an apocalyptic number.

21101011010982 is an abundant number, since it is smaller than the sum of its proper divisors (31152998438010).

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

21101011010982 is a wasteful number, since it uses less digits than its factorization.

21101011010982 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12458173 (or 12458170 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 27.

The spelling of 21101011010982 in words is "twenty-one trillion, one hundred one billion, eleven million, ten thousand, nine hundred eighty-two".