212000021039 has 2 divisors, whose sum is σ = 212000021040. Its totient is φ = 212000021038.

The previous prime is 212000021027. The next prime is 212000021081. The reversal of 212000021039 is 930120000212.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-212000021039 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 212000021039.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (212000021089) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106000010519 + 106000010520.

It is an arithmetic number, because the mean of its divisors is an integer number (106000010520).

Almost surely, 2^212000021039 is an apocalyptic number.

212000021039 is a deficient number, since it is larger than the sum of its proper divisors (1).

212000021039 is an equidigital number, since it uses as much as digits as its factorization.

212000021039 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 216, while the sum is 20.

The spelling of 212000021039 in words is "two hundred twelve billion, twenty-one thousand, thirty-nine".