12021111213031 has 2 divisors, whose sum is σ = 12021111213032. Its totient is φ = 12021111213030.

The previous prime is 12021111212993. The next prime is 12021111213071. The reversal of 12021111213031 is 13031211112021.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12021111213031 is a prime.

It is a super-2 number, since 2×12021111213031² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12021111213071) 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, 6010555606515 + 6010555606516.

It is an arithmetic number, because the mean of its divisors is an integer number (6010555606516).

Almost surely, 2^{12021111213031} is an apocalyptic number.

12021111213031 is a deficient number, since it is larger than the sum of its proper divisors (1).

12021111213031 is an equidigital number, since it uses as much as digits as its factorization.

12021111213031 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 19.

Adding to 12021111213031 its reverse (13031211112021), we get a palindrome (25052322325052).

It can be divided in two parts, 1202111 and 1213031, that added together give a palindrome (2415142).

The spelling of 12021111213031 in words is "twelve trillion, twenty-one billion, one hundred eleven million, two hundred thirteen thousand, thirty-one".