221100021120222 has 24 divisors (see below), whose sum is σ = 495569012856840. Its totient is φ = 71158627486800.

The previous prime is 221100021120221. The next prime is 221100021120263. The reversal of 221100021120222 is 222021120001122.

It is a happy number.

221100021120222 is a `hidden beast` number, since 2 + 211 + 0 + 0 + 0 + 211 + 20 + 222 = 666.

It is a super-2 number, since 2×221100021120222² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 221100021120195 and 221100021120204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221100021120221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 211781628904 + ... + 211781629947.

It is an arithmetic number, because the mean of its divisors is an integer number (20648708869035).

Almost surely, 2^{221100021120222} is an apocalyptic number.

221100021120222 is an abundant number, since it is smaller than the sum of its proper divisors (274468991736618).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

221100021120222 is a wasteful number, since it uses less digits than its factorization.

221100021120222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 423563258888 (or 423563258885 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 221100021120222 its reverse (222021120001122), we get a palindrome (443121141121344).

The spelling of 221100021120222 in words is "two hundred twenty-one trillion, one hundred billion, twenty-one million, one hundred twenty thousand, two hundred twenty-two".