221201110982 has 4 divisors (see below), whose sum is σ = 331801666476. Its totient is φ = 110600555490.

The previous prime is 221201110943. The next prime is 221201110987. The reversal of 221201110982 is 289011102122.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221201110987) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55300277744 + ... + 55300277747.

It is an arithmetic number, because the mean of its divisors is an integer number (82950416619).

Almost surely, 2^221201110982 is an apocalyptic number.

221201110982 is a deficient number, since it is larger than the sum of its proper divisors (110600555494).

221201110982 is a wasteful number, since it uses less digits than its factorization.

221201110982 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110600555493.

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

The spelling of 221201110982 in words is "two hundred twenty-one billion, two hundred one million, one hundred ten thousand, nine hundred eighty-two".