210021012239 has 2 divisors, whose sum is σ = 210021012240. Its totient is φ = 210021012238.

The previous prime is 210021012221. The next prime is 210021012251. The reversal of 210021012239 is 932210120012.

It is a happy number.

210021012239 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 not a de Polignac number, because 210021012239 - 2³² = 205726044943 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (210021012739) 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, 105010506119 + 105010506120.

It is an arithmetic number, because the mean of its divisors is an integer number (105010506120).

Almost surely, 2^210021012239 is an apocalyptic number.

210021012239 is a deficient number, since it is larger than the sum of its proper divisors (1).

210021012239 is an equidigital number, since it uses as much as digits as its factorization.

210021012239 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 210021012239 in words is "two hundred ten billion, twenty-one million, twelve thousand, two hundred thirty-nine".