12030312223221 has 4 divisors (see below), whose sum is σ = 16040416297632. Its totient is φ = 8020208148812.

The previous prime is 12030312223211. The next prime is 12030312223229. The reversal of 12030312223221 is 12232221303021.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 12030312223221 - 2²⁶ = 12030245114357 is a prime.

It is a super-2 number, since 2×12030312223221² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12030312223191 and 12030312223200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12030312223229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2005052037201 + ... + 2005052037206.

It is an arithmetic number, because the mean of its divisors is an integer number (4010104074408).

Almost surely, 2^{12030312223221} is an apocalyptic number.

It is an amenable number.

12030312223221 is a deficient number, since it is larger than the sum of its proper divisors (4010104074411).

12030312223221 is an equidigital number, since it uses as much as digits as its factorization.

12030312223221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4010104074410.

The product of its (nonzero) digits is 1728, while the sum is 24.

Adding to 12030312223221 its reverse (12232221303021), we get a palindrome (24262533526242).

The spelling of 12030312223221 in words is "twelve trillion, thirty billion, three hundred twelve million, two hundred twenty-three thousand, two hundred twenty-one".