212021110439 has 2 divisors, whose sum is σ = 212021110440. Its totient is φ = 212021110438.

The previous prime is 212021110421. The next prime is 212021110487. The reversal of 212021110439 is 934011120212.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 212021110439 - 2¹⁶ = 212021044903 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (212021110039) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106010555219 + 106010555220.

It is an arithmetic number, because the mean of its divisors is an integer number (106010555220).

Almost surely, 2^212021110439 is an apocalyptic number.

212021110439 is a deficient number, since it is larger than the sum of its proper divisors (1).

212021110439 is an equidigital number, since it uses as much as digits as its factorization.

212021110439 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 864, while the sum is 26.

The spelling of 212021110439 in words is "two hundred twelve billion, twenty-one million, one hundred ten thousand, four hundred thirty-nine".