12030013321221 has 32 divisors (see below), whose sum is σ = 18367902344448. Its totient is φ = 6860625108480.

The previous prime is 12030013321201. The next prime is 12030013321229. The reversal of 12030013321221 is 12212331003021.

It is not a de Polignac number, because 12030013321221 - 2¹⁷ = 12030013190149 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12030013321229) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 213069631 + ... + 213126083.

It is an arithmetic number, because the mean of its divisors is an integer number (573996948264).

Almost surely, 2^{12030013321221} is an apocalyptic number.

It is an amenable number.

12030013321221 is a deficient number, since it is larger than the sum of its proper divisors (6337889023227).

12030013321221 is a wasteful number, since it uses less digits than its factorization.

12030013321221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76461.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 12030013321221 its reverse (12212331003021), we get a palindrome (24242344324242).

The spelling of 12030013321221 in words is "twelve trillion, thirty billion, thirteen million, three hundred twenty-one thousand, two hundred twenty-one".