12221220120121 has 8 divisors (see below), whose sum is σ = 12801066410880. Its totient is φ = 11645414570592.

The previous prime is 12221220120119. The next prime is 12221220120127. The reversal of 12221220120121 is 12102102212221.

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 12221220120121 - 2¹ = 12221220120119 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12221220120127) 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, 1010179116 + ... + 1010191213.

It is an arithmetic number, because the mean of its divisors is an integer number (1600133301360).

Almost surely, 2^{12221220120121} is an apocalyptic number.

It is an amenable number.

12221220120121 is a deficient number, since it is larger than the sum of its proper divisors (579846290759).

12221220120121 is a wasteful number, since it uses less digits than its factorization.

12221220120121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2020370615.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 12221220120121 its reverse (12102102212221), we get a palindrome (24323322332342).

The spelling of 12221220120121 in words is "twelve trillion, two hundred twenty-one billion, two hundred twenty million, one hundred twenty thousand, one hundred twenty-one".