12212111001031 has 2 divisors, whose sum is σ = 12212111001032. Its totient is φ = 12212111001030.

The previous prime is 12212111001001. The next prime is 12212111001049. The reversal of 12212111001031 is 13010011121221.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12212111001031 - 2⁹ = 12212111000519 is a prime.

It is a super-2 number, since 2×12212111001031² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12212111000996 and 12212111001014.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12212111001001) 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, 6106055500515 + 6106055500516.

It is an arithmetic number, because the mean of its divisors is an integer number (6106055500516).

Almost surely, 2^{12212111001031} is an apocalyptic number.

12212111001031 is a deficient number, since it is larger than the sum of its proper divisors (1).

12212111001031 is an equidigital number, since it uses as much as digits as its factorization.

12212111001031 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24, while the sum is 16.

Adding to 12212111001031 its reverse (13010011121221), we get a palindrome (25222122122252).

The spelling of 12212111001031 in words is "twelve trillion, two hundred twelve billion, one hundred eleven million, one thousand, thirty-one".