21012101210982 has 32 divisors (see below), whose sum is σ = 48033227872512. Its totient is φ = 6002761493664.

The previous prime is 21012101210963. The next prime is 21012101211007. The reversal of 21012101210982 is 28901210121012.

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 15 ways as a sum of consecutive naturals, for example, 28633153 + ... + 29357820.

It is an arithmetic number, because the mean of its divisors is an integer number (1501038371016).

Almost surely, 2^{21012101210982} is an apocalyptic number.

21012101210982 is an abundant number, since it is smaller than the sum of its proper divisors (27021126661530).

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

21012101210982 is a wasteful number, since it uses less digits than its factorization.

21012101210982 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57999612.

The product of its (nonzero) digits is 1152, while the sum is 30.

Adding to 21012101210982 its reverse (28901210121012), we get a palindrome (49913311331994).

The spelling of 21012101210982 in words is "twenty-one trillion, twelve billion, one hundred one million, two hundred ten thousand, nine hundred eighty-two".