12221120000021 has 8 divisors (see below), whose sum is σ = 12428341879200. Its totient is φ = 12013900929360.

The previous prime is 12221119999967. The next prime is 12221120000081. The reversal of 12221120000021 is 12000002112221.

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 12221120000021 - 2¹⁴ = 12221119983637 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12221119999960 and 12221120000005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12221120000081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9263615 + ... + 10500323.

It is an arithmetic number, because the mean of its divisors is an integer number (1553542734900).

Almost surely, 2^{12221120000021} is an apocalyptic number.

It is an amenable number.

12221120000021 is a deficient number, since it is larger than the sum of its proper divisors (207221879179).

12221120000021 is a wasteful number, since it uses less digits than its factorization.

12221120000021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1404259.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 12221120000021 its reverse (12000002112221), we get a palindrome (24221122112242).

It can be divided in two parts, 12221 and 120000021, that multiplied together give a palindrome (1466520256641).

The spelling of 12221120000021 in words is "twelve trillion, two hundred twenty-one billion, one hundred twenty million, twenty-one", and thus it is an aban number.