10211231117 has 2 divisors, whose sum is σ = 10211231118. Its totient is φ = 10211231116.

The previous prime is 10211231089. The next prime is 10211231131. The reversal of 10211231117 is 71113211201.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7114753801 + 3096477316 = 84349^2 + 55646^2 .

It is an emirp because it is prime and its reverse (71113211201) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 10211231117 - 2¹⁴ = 10211214733 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10211231137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5105615558 + 5105615559.

It is an arithmetic number, because the mean of its divisors is an integer number (5105615559).

Almost surely, 2^10211231117 is an apocalyptic number.

It is an amenable number.

10211231117 is a deficient number, since it is larger than the sum of its proper divisors (1).

10211231117 is an equidigital number, since it uses as much as digits as its factorization.

10211231117 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 84, while the sum is 20.

Adding to 10211231117 its reverse (71113211201), we get a palindrome (81324442318).

The spelling of 10211231117 in words is "ten billion, two hundred eleven million, two hundred thirty-one thousand, one hundred seventeen".