1001222121919 has 2 divisors, whose sum is σ = 1001222121920. Its totient is φ = 1001222121918.

The previous prime is 1001222121901. The next prime is 1001222121923. The reversal of 1001222121919 is 9191212221001.

It is a strong prime.

It is an emirp because it is prime and its reverse (9191212221001) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1001222121919 is a prime.

It is a super-2 number, since 2×1001222121919² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1001222121979) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 500611060959 + 500611060960.

It is an arithmetic number, because the mean of its divisors is an integer number (500611060960).

Almost surely, 2^{1001222121919} is an apocalyptic number.

1001222121919 is a deficient number, since it is larger than the sum of its proper divisors (1).

1001222121919 is an equidigital number, since it uses as much as digits as its factorization.

1001222121919 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1296, while the sum is 31.

The spelling of 1001222121919 in words is "one trillion, one billion, two hundred twenty-two million, one hundred twenty-one thousand, nine hundred nineteen".