212042140823 has 2 divisors, whose sum is σ = 212042140824. Its totient is φ = 212042140822.

The previous prime is 212042140813. The next prime is 212042140847. The reversal of 212042140823 is 328041240212.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 212042140823 - 2¹⁴ = 212042124439 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (212042140813) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106021070411 + 106021070412.

It is an arithmetic number, because the mean of its divisors is an integer number (106021070412).

Almost surely, 2^212042140823 is an apocalyptic number.

212042140823 is a deficient number, since it is larger than the sum of its proper divisors (1).

212042140823 is an equidigital number, since it uses as much as digits as its factorization.

212042140823 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6144, while the sum is 29.

The spelling of 212042140823 in words is "two hundred twelve billion, forty-two million, one hundred forty thousand, eight hundred twenty-three".