1001121209579 has 2 divisors, whose sum is σ = 1001121209580. Its totient is φ = 1001121209578.

The previous prime is 1001121209513. The next prime is 1001121209581. The reversal of 1001121209579 is 9759021211001.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1001121209579 is a prime.

Together with 1001121209581, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1001121202579) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 500560604789 + 500560604790.

It is an arithmetic number, because the mean of its divisors is an integer number (500560604790).

Almost surely, 2^{1001121209579} is an apocalyptic number.

1001121209579 is a deficient number, since it is larger than the sum of its proper divisors (1).

1001121209579 is an equidigital number, since it uses as much as digits as its factorization.

1001121209579 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11340, while the sum is 38.

The spelling of 1001121209579 in words is "one trillion, one billion, one hundred twenty-one million, two hundred nine thousand, five hundred seventy-nine".