12010030031221 has 2 divisors, whose sum is σ = 12010030031222. Its totient is φ = 12010030031220.

The previous prime is 12010030031203. The next prime is 12010030031267. The reversal of 12010030031221 is 12213003001021.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7747399062225 + 4262630968996 = 2783415^2 + 2064614^2 .

It is a cyclic number.

It is not a de Polignac number, because 12010030031221 - 2⁵ = 12010030031189 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12010030031195 and 12010030031204.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12010030034221) 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 as a sum of consecutive naturals, namely, 6005015015610 + 6005015015611.

It is an arithmetic number, because the mean of its divisors is an integer number (6005015015611).

Almost surely, 2^{12010030031221} is an apocalyptic number.

It is an amenable number.

12010030031221 is a deficient number, since it is larger than the sum of its proper divisors (1).

12010030031221 is an equidigital number, since it uses as much as digits as its factorization.

12010030031221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 12010030031221 its reverse (12213003001021), we get a palindrome (24223033032242).

The spelling of 12010030031221 in words is "twelve trillion, ten billion, thirty million, thirty-one thousand, two hundred twenty-one".