12420211189831 has 2 divisors, whose sum is σ = 12420211189832. Its totient is φ = 12420211189830.

The previous prime is 12420211189783. The next prime is 12420211189847. The reversal of 12420211189831 is 13898111202421.

12420211189831 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is an emirp because it is prime and its reverse (13898111202421) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12420211189831 - 2¹³ = 12420211181639 is a prime.

It is a super-2 number, since 2×12420211189831² (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 (12420211159831) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6210105594915 + 6210105594916.

It is an arithmetic number, because the mean of its divisors is an integer number (6210105594916).

Almost surely, 2^{12420211189831} is an apocalyptic number.

12420211189831 is a deficient number, since it is larger than the sum of its proper divisors (1).

12420211189831 is an equidigital number, since it uses as much as digits as its factorization.

12420211189831 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 55296, while the sum is 43.

The spelling of 12420211189831 in words is "twelve trillion, four hundred twenty billion, two hundred eleven million, one hundred eighty-nine thousand, eight hundred thirty-one".