11616016121 has 2 divisors, whose sum is σ = 11616016122. Its totient is φ = 11616016120.

The previous prime is 11616016081. The next prime is 11616016123. The reversal of 11616016121 is 12161061611.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7562911225 + 4053104896 = 86965^2 + 63664^2 .

It is a cyclic number.

It is not a de Polignac number, because 11616016121 - 2⁶ = 11616016057 is a prime.

Together with 11616016123, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (11616016123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5808008060 + 5808008061.

It is an arithmetic number, because the mean of its divisors is an integer number (5808008061).

Almost surely, 2^11616016121 is an apocalyptic number.

It is an amenable number.

11616016121 is a deficient number, since it is larger than the sum of its proper divisors (1).

11616016121 is an equidigital number, since it uses as much as digits as its factorization.

11616016121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 432, while the sum is 26.

Adding to 11616016121 its reverse (12161061611), we get a palindrome (23777077732).

The spelling of 11616016121 in words is "eleven billion, six hundred sixteen million, sixteen thousand, one hundred twenty-one".