12200011221221 has 8 divisors (see below), whose sum is σ = 12243832071840. Its totient is φ = 12156195380112.

The previous prime is 12200011221199. The next prime is 12200011221227. The reversal of 12200011221221 is 12212211000221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12200011221221 - 2¹⁰ = 12200011220197 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12200011221221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12200011221227) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3661670 + ... + 6148808.

It is an arithmetic number, because the mean of its divisors is an integer number (1530479008980).

Almost surely, 2^{12200011221221} is an apocalyptic number.

It is an amenable number.

12200011221221 is a deficient number, since it is larger than the sum of its proper divisors (43820850619).

12200011221221 is a wasteful number, since it uses less digits than its factorization.

12200011221221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2504755.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 12200011221221 its reverse (12212211000221), we get a palindrome (24412222221442).

The spelling of 12200011221221 in words is "twelve trillion, two hundred billion, eleven million, two hundred twenty-one thousand, two hundred twenty-one".