11110164312521 has 2 divisors, whose sum is σ = 11110164312522. Its totient is φ = 11110164312520.

The previous prime is 11110164312517. The next prime is 11110164312551. The reversal of 11110164312521 is 12521346101111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7231769748025 + 3878394564496 = 2689195^2 + 1969364^2 .

It is an emirp because it is prime and its reverse (12521346101111) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11110164312521 - 2² = 11110164312517 is a prime.

It is not a weakly prime, because it can be changed into another prime (11110164312551) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5555082156260 + 5555082156261.

It is an arithmetic number, because the mean of its divisors is an integer number (5555082156261).

Almost surely, 2^{11110164312521} is an apocalyptic number.

It is an amenable number.

11110164312521 is a deficient number, since it is larger than the sum of its proper divisors (1).

11110164312521 is an equidigital number, since it uses as much as digits as its factorization.

11110164312521 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1440, while the sum is 29.

The spelling of 11110164312521 in words is "eleven trillion, one hundred ten billion, one hundred sixty-four million, three hundred twelve thousand, five hundred twenty-one".