12200221222221 has 16 divisors (see below), whose sum is σ = 16509898658304. Its totient is φ = 8012014455984.

The previous prime is 12200221222183. The next prime is 12200221222247. The reversal of 12200221222221 is 12222212200221.

It is not a de Polignac number, because 12200221222221 - 2¹³ = 12200221214029 is a prime.

It is a super-2 number, since 2×12200221222221² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12200221222261) 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, 32051800 + ... + 32430206.

It is an arithmetic number, because the mean of its divisors is an integer number (1031868666144).

Almost surely, 2^{12200221222221} is an apocalyptic number.

It is an amenable number.

12200221222221 is a deficient number, since it is larger than the sum of its proper divisors (4309677436083).

12200221222221 is a wasteful number, since it uses less digits than its factorization.

12200221222221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 538880.

The product of its (nonzero) digits is 512, while the sum is 21.

Adding to 12200221222221 its reverse (12222212200221), we get a palindrome (24422433422442).

The spelling of 12200221222221 in words is "twelve trillion, two hundred billion, two hundred twenty-one million, two hundred twenty-two thousand, two hundred twenty-one".