212010021239 has 2 divisors, whose sum is σ = 212010021240. Its totient is φ = 212010021238.

The previous prime is 212010021217. The next prime is 212010021247. The reversal of 212010021239 is 932120010212.

It is a happy number.

212010021239 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 a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-212010021239 is a prime.

It is a super-2 number, since 2×212010021239² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (212010021539) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106005010619 + 106005010620.

It is an arithmetic number, because the mean of its divisors is an integer number (106005010620).

Almost surely, 2^212010021239 is an apocalyptic number.

212010021239 is a deficient number, since it is larger than the sum of its proper divisors (1).

212010021239 is an equidigital number, since it uses as much as digits as its factorization.

212010021239 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 23.

The spelling of 212010021239 in words is "two hundred twelve billion, ten million, twenty-one thousand, two hundred thirty-nine".