221021112122 has 16 divisors (see below), whose sum is σ = 334475697600. Its totient is φ = 109531300320.

The previous prime is 221021112119. The next prime is 221021112131. The reversal of 221021112122 is 221211120122.

It is a self number, because there is not a number n which added to its sum of digits gives 221021112122.

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, 309422 + ... + 733337.

It is an arithmetic number, because the mean of its divisors is an integer number (20904731100).

Almost surely, 2^221021112122 is an apocalyptic number.

221021112122 is a deficient number, since it is larger than the sum of its proper divisors (113454585478).

221021112122 is a wasteful number, since it uses less digits than its factorization.

221021112122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1043701.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 221021112122 its reverse (221211120122), we get a palindrome (442232232244).

The spelling of 221021112122 in words is "two hundred twenty-one billion, twenty-one million, one hundred twelve thousand, one hundred twenty-two".