221100020011222 has 128 divisors (see below), whose sum is σ = 389313253075968. Its totient is φ = 93189406464000.

The previous prime is 221100020011097. The next prime is 221100020011223. The reversal of 221100020011222 is 222110020001122.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 221100020011196 and 221100020011205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221100020011223) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 510894813 + ... + 511327399.

It is an arithmetic number, because the mean of its divisors is an integer number (3041509789656).

Almost surely, 2^{221100020011222} is an apocalyptic number.

221100020011222 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

221100020011222 is a deficient number, since it is larger than the sum of its proper divisors (168213233064746).

221100020011222 is a wasteful number, since it uses less digits than its factorization.

221100020011222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 432934.

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

Adding to 221100020011222 its reverse (222110020001122), we get a palindrome (443210040012344).

It can be divided in two parts, 2211000 and 20011222, that added together give a palindrome (22222222).

The spelling of 221100020011222 in words is "two hundred twenty-one trillion, one hundred billion, twenty million, eleven thousand, two hundred twenty-two".