221111120104 has 16 divisors (see below), whose sum is σ = 473809543200. Its totient is φ = 94761908592.

The previous prime is 221111120081. The next prime is 221111120123. The reversal of 221111120104 is 401021111122.

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, 1974206374 + ... + 1974206485.

It is an arithmetic number, because the mean of its divisors is an integer number (29613096450).

Almost surely, 2^221111120104 is an apocalyptic number.

It is an amenable number.

221111120104 is an abundant number, since it is smaller than the sum of its proper divisors (252698423096).

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

221111120104 is a wasteful number, since it uses less digits than its factorization.

221111120104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3948412872 (or 3948412868 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 221111120104 its reverse (401021111122), we get a palindrome (622132231226).

The spelling of 221111120104 in words is "two hundred twenty-one billion, one hundred eleven million, one hundred twenty thousand, one hundred four".