21220100110222 has 16 divisors (see below), whose sum is σ = 34289278852752. Its totient is φ = 9790847902080.

The previous prime is 21220100110217. The next prime is 21220100110241. The reversal of 21220100110222 is 22201100102212.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 21220100110196 and 21220100110205.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 126767104 + ... + 126934387.

It is an arithmetic number, because the mean of its divisors is an integer number (2143079928297).

Almost surely, 2^{21220100110222} is an apocalyptic number.

21220100110222 is a deficient number, since it is larger than the sum of its proper divisors (13069178742530).

21220100110222 is a wasteful number, since it uses less digits than its factorization.

21220100110222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 253704723.

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

Adding to 21220100110222 its reverse (22201100102212), we get a palindrome (43421200212434).

The spelling of 21220100110222 in words is "twenty-one trillion, two hundred twenty billion, one hundred million, one hundred ten thousand, two hundred twenty-two".