221212200212222 has 16 divisors (see below), whose sum is σ = 331959795921600. Its totient is φ = 110558943332352.

The previous prime is 221212200212219. The next prime is 221212200212243. The reversal of 221212200212222 is 222212002212122.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50537654 + ... + 54740102.

It is an arithmetic number, because the mean of its divisors is an integer number (20747487245100).

Almost surely, 2^{221212200212222} is an apocalyptic number.

221212200212222 is a deficient number, since it is larger than the sum of its proper divisors (110747595709378).

221212200212222 is a wasteful number, since it uses less digits than its factorization.

221212200212222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4213667.

The product of its (nonzero) digits is 1024, while the sum is 23.

Adding to 221212200212222 its reverse (222212002212122), we get a palindrome (443424202424344).

The spelling of 221212200212222 in words is "two hundred twenty-one trillion, two hundred twelve billion, two hundred million, two hundred twelve thousand, two hundred twenty-two".