221001111012104 has 32 divisors (see below), whose sum is σ = 432753506375040. Its totient is φ = 105608176608000.

The previous prime is 221001111012061. The next prime is 221001111012113. The reversal of 221001111012104 is 401210111100122.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 499817732 + ... + 500259699.

It is an arithmetic number, because the mean of its divisors is an integer number (13523547074220).

Almost surely, 2^{221001111012104} is an apocalyptic number.

It is an amenable number.

221001111012104 is a deficient number, since it is larger than the sum of its proper divisors (211752395362936).

221001111012104 is a wasteful number, since it uses less digits than its factorization.

221001111012104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1000078661 (or 1000078657 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 221001111012104 its reverse (401210111100122), we get a palindrome (622211222112226).

The spelling of 221001111012104 in words is "two hundred twenty-one trillion, one billion, one hundred eleven million, twelve thousand, one hundred four".