1001220323249 has 2 divisors, whose sum is σ = 1001220323250. Its totient is φ = 1001220323248.

The previous prime is 1001220323221. The next prime is 1001220323287. The reversal of 1001220323249 is 9423230221001.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 796613371024 + 204606952225 = 892532^2 + 452335^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1001220323249 is a prime.

It is not a weakly prime, because it can be changed into another prime (1001220323749) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 500610161624 + 500610161625.

It is an arithmetic number, because the mean of its divisors is an integer number (500610161625).

Almost surely, 2^{1001220323249} is an apocalyptic number.

It is an amenable number.

1001220323249 is a deficient number, since it is larger than the sum of its proper divisors (1).

1001220323249 is an equidigital number, since it uses as much as digits as its factorization.

1001220323249 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5184, while the sum is 29.

The spelling of 1001220323249 in words is "one trillion, one billion, two hundred twenty million, three hundred twenty-three thousand, two hundred forty-nine".