1001021012219 has 2 divisors, whose sum is σ = 1001021012220. Its totient is φ = 1001021012218.

The previous prime is 1001021012207. The next prime is 1001021012221. The reversal of 1001021012219 is 9122101201001.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1001021012219 is a prime.

It is a super-2 number, since 2×1001021012219² (a number of 25 digits) contains 22 as substring.

Together with 1001021012221, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1001021012219.

It is not a weakly prime, because it can be changed into another prime (1001021012239) 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, 500510506109 + 500510506110.

It is an arithmetic number, because the mean of its divisors is an integer number (500510506110).

Almost surely, 2^{1001021012219} is an apocalyptic number.

1001021012219 is a deficient number, since it is larger than the sum of its proper divisors (1).

1001021012219 is an equidigital number, since it uses as much as digits as its factorization.

1001021012219 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72, while the sum is 20.

The spelling of 1001021012219 in words is "one trillion, one billion, twenty-one million, twelve thousand, two hundred nineteen".