221100000121222 has 32 divisors (see below), whose sum is σ = 334043701344000. Its totient is φ = 109755016154208.

The previous prime is 221100000121219. The next prime is 221100000121229. The reversal of 221100000121222 is 222121000001122.

It is a happy number.

It is a super-3 number, since 3×221100000121222³ (a number of 44 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 221100000121196 and 221100000121205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221100000121229) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3492914529 + ... + 3492977827.

It is an arithmetic number, because the mean of its divisors is an integer number (10438865667000).

Almost surely, 2^{221100000121222} is an apocalyptic number.

221100000121222 is a deficient number, since it is larger than the sum of its proper divisors (112943701222778).

221100000121222 is a wasteful number, since it uses less digits than its factorization.

221100000121222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86140.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 221100000121222 its reverse (222121000001122), we get a palindrome (443221000122344).

The spelling of 221100000121222 in words is "two hundred twenty-one trillion, one hundred billion, one hundred twenty-one thousand, two hundred twenty-two".