221211010982 has 64 divisors (see below), whose sum is σ = 366828134400. Its totient is φ = 99427762560.

The previous prime is 221211010981. The next prime is 221211011003. The reversal of 221211010982 is 289010112122.

It is a super-2 number, since 2×221211010982² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221211010981) 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 31 ways as a sum of consecutive naturals, for example, 76834619 + ... + 76837497.

It is an arithmetic number, because the mean of its divisors is an integer number (5731689600).

Almost surely, 2^221211010982 is an apocalyptic number.

221211010982 is a deficient number, since it is larger than the sum of its proper divisors (145617123418).

221211010982 is a wasteful number, since it uses less digits than its factorization.

221211010982 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3461.

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

The spelling of 221211010982 in words is "two hundred twenty-one billion, two hundred eleven million, ten thousand, nine hundred eighty-two".