212021003219 has 2 divisors, whose sum is σ = 212021003220. Its totient is φ = 212021003218.

The previous prime is 212021003209. The next prime is 212021003237. The reversal of 212021003219 is 912300120212.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 212021003219 - 2²⁴ = 212004226003 is a prime.

It is a super-2 number, since 2×212021003219² (a number of 23 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 212021003194 and 212021003203.

It is not a weakly prime, because it can be changed into another prime (212021003209) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106010501609 + 106010501610.

It is an arithmetic number, because the mean of its divisors is an integer number (106010501610).

Almost surely, 2^212021003219 is an apocalyptic number.

212021003219 is a deficient number, since it is larger than the sum of its proper divisors (1).

212021003219 is an equidigital number, since it uses as much as digits as its factorization.

212021003219 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 212021003219 in words is "two hundred twelve billion, twenty-one million, three thousand, two hundred nineteen".