1001111220247 has 2 divisors, whose sum is σ = 1001111220248. Its totient is φ = 1001111220246.

The previous prime is 1001111220121. The next prime is 1001111220257. The reversal of 1001111220247 is 7420221111001.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (7420221111001) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1001111220247 - 2²³ = 1001102831639 is a prime.

It is a super-3 number, since 3×1001111220247³ (a number of 37 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1001111220257) 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, 500555610123 + 500555610124.

It is an arithmetic number, because the mean of its divisors is an integer number (500555610124).

Almost surely, 2^{1001111220247} is an apocalyptic number.

1001111220247 is a deficient number, since it is larger than the sum of its proper divisors (1).

1001111220247 is an equidigital number, since it uses as much as digits as its factorization.

1001111220247 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 1001111220247 its reverse (7420221111001), we get a palindrome (8421332331248).

The spelling of 1001111220247 in words is "one trillion, one billion, one hundred eleven million, two hundred twenty thousand, two hundred forty-seven".