221002220121112 has 32 divisors (see below), whose sum is σ = 436212341179200. Its totient is φ = 104679562442400.

The previous prime is 221002220121107. The next prime is 221002220121173. The reversal of 221002220121112 is 211121022200122.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a self number, because there is not a number n which added to its sum of digits gives 221002220121112.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36779814 + ... + 42364597.

It is an arithmetic number, because the mean of its divisors is an integer number (13631635661850).

Almost surely, 2^{221002220121112} is an apocalyptic number.

It is an amenable number.

221002220121112 is a deficient number, since it is larger than the sum of its proper divisors (215210121058088).

221002220121112 is a wasteful number, since it uses less digits than its factorization.

221002220121112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79162807 (or 79162803 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 221002220121112 its reverse (211121022200122), we get a palindrome (432123242321234).

The spelling of 221002220121112 in words is "two hundred twenty-one trillion, two billion, two hundred twenty million, one hundred twenty-one thousand, one hundred twelve".