212101000019 has 2 divisors, whose sum is σ = 212101000020. Its totient is φ = 212101000018.

The previous prime is 212101000009. The next prime is 212101000031. The reversal of 212101000019 is 910000101212.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 212101000019 - 2⁴ = 212101000003 is a prime.

It is a super-2 number, since 2×212101000019² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 212100999970 and 212101000006.

It is not a weakly prime, because it can be changed into another prime (212101000009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106050500009 + 106050500010.

It is an arithmetic number, because the mean of its divisors is an integer number (106050500010).

Almost surely, 2^212101000019 is an apocalyptic number.

212101000019 is a deficient number, since it is larger than the sum of its proper divisors (1).

212101000019 is an equidigital number, since it uses as much as digits as its factorization.

212101000019 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36, while the sum is 17.

The spelling of 212101000019 in words is "two hundred twelve billion, one hundred one million, nineteen", and thus it is an aban number.