11164151021 has 2 divisors, whose sum is σ = 11164151022. Its totient is φ = 11164151020.

The previous prime is 11164150997. The next prime is 11164151023. The reversal of 11164151021 is 12015146111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11093355625 + 70795396 = 105325^2 + 8414^2 .

It is a cyclic number.

It is not a de Polignac number, because 11164151021 - 2¹⁸ = 11163888877 is a prime.

Together with 11164151023, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11164151023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5582075510 + 5582075511.

It is an arithmetic number, because the mean of its divisors is an integer number (5582075511).

Almost surely, 2^11164151021 is an apocalyptic number.

It is an amenable number.

11164151021 is a deficient number, since it is larger than the sum of its proper divisors (1).

11164151021 is an equidigital number, since it uses as much as digits as its factorization.

11164151021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 240, while the sum is 23.

Adding to 11164151021 its reverse (12015146111), we get a palindrome (23179297132).

The spelling of 11164151021 in words is "eleven billion, one hundred sixty-four million, one hundred fifty-one thousand, twenty-one".