221122212012122 has 16 divisors (see below), whose sum is σ = 332198354632320. Its totient is φ = 110389559351808.

The previous prime is 221122212012109. The next prime is 221122212012133. The reversal of 221122212012122 is 221210212221122.

It is a super-3 number, since 3×221122212012122³ (a number of 44 digits) contains 333 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29708018 + ... + 36397949.

It is an arithmetic number, because the mean of its divisors is an integer number (20762397164520).

Almost surely, 2^{221122212012122} is an apocalyptic number.

221122212012122 is a deficient number, since it is larger than the sum of its proper divisors (111076142620198).

221122212012122 is a wasteful number, since it uses less digits than its factorization.

221122212012122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66108565.

The product of its (nonzero) digits is 512, while the sum is 23.

Adding to 221122212012122 its reverse (221210212221122), we get a palindrome (442332424233244).

The spelling of 221122212012122 in words is "two hundred twenty-one trillion, one hundred twenty-two billion, two hundred twelve million, twelve thousand, one hundred twenty-two".