221211110982 has 8 divisors (see below), whose sum is σ = 442422221976. Its totient is φ = 73737036992.

The previous prime is 221211110971. The next prime is 221211111031. The reversal of 221211110982 is 289011112122.

It is a sphenic number, since it is the product of 3 distinct primes.

221211110982 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18434259243 + ... + 18434259254.

It is an arithmetic number, because the mean of its divisors is an integer number (55302777747).

Almost surely, 2^221211110982 is an apocalyptic number.

221211110982 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

221211110982 is a wasteful number, since it uses less digits than its factorization.

221211110982 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36868518502.

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

The spelling of 221211110982 in words is "two hundred twenty-one billion, two hundred eleven million, one hundred ten thousand, nine hundred eighty-two".