1001212101247 has 2 divisors, whose sum is σ = 1001212101248. Its totient is φ = 1001212101246.

The previous prime is 1001212101191. The next prime is 1001212101259. The reversal of 1001212101247 is 7421012121001.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (7421012121001) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1001212101247 - 2³¹ = 999064617599 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1001212401247) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 500606050623 + 500606050624.

It is an arithmetic number, because the mean of its divisors is an integer number (500606050624).

Almost surely, 2^{1001212101247} is an apocalyptic number.

1001212101247 is a deficient number, since it is larger than the sum of its proper divisors (1).

1001212101247 is an equidigital number, since it uses as much as digits as its factorization.

1001212101247 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 224, while the sum is 22.

Adding to 1001212101247 its reverse (7421012121001), we get a palindrome (8422224222248).

The spelling of 1001212101247 in words is "one trillion, one billion, two hundred twelve million, one hundred one thousand, two hundred forty-seven".