211221010982 has 16 divisors (see below), whose sum is σ = 322850927520. Its totient is φ = 103604547072.

The previous prime is 211221010963. The next prime is 211221010999. The reversal of 211221010982 is 289010122112.

It is a super-2 number, since 2×211221010982² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 728198 + ... + 976070.

It is an arithmetic number, because the mean of its divisors is an integer number (20178182970).

Almost surely, 2^211221010982 is an apocalyptic number.

211221010982 is a deficient number, since it is larger than the sum of its proper divisors (111629916538).

211221010982 is a wasteful number, since it uses less digits than its factorization.

211221010982 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 255967.

The product of its (nonzero) digits is 1152, while the sum is 29.

The spelling of 211221010982 in words is "two hundred eleven billion, two hundred twenty-one million, ten thousand, nine hundred eighty-two".