221121100982 has 8 divisors (see below), whose sum is σ = 331684863552. Its totient is φ = 110559479800.

The previous prime is 221121100951. The next prime is 221121100987. The reversal of 221121100982 is 289001121122.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221121100987) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 245894 + ... + 709017.

It is an arithmetic number, because the mean of its divisors is an integer number (41460607944).

Almost surely, 2^221121100982 is an apocalyptic number.

221121100982 is a deficient number, since it is larger than the sum of its proper divisors (110563762570).

221121100982 is a wasteful number, since it uses less digits than its factorization.

221121100982 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1070694.

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

The spelling of 221121100982 in words is "two hundred twenty-one billion, one hundred twenty-one million, one hundred thousand, nine hundred eighty-two".