16234660121 has 2 divisors, whose sum is σ = 16234660122. Its totient is φ = 16234660120.

The previous prime is 16234660081. The next prime is 16234660151. The reversal of 16234660121 is 12106643261.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9184538896 + 7050121225 = 95836^2 + 83965^2 .

It is a cyclic number.

It is not a de Polignac number, because 16234660121 - 2¹⁰ = 16234659097 is a prime.

It is not a weakly prime, because it can be changed into another prime (16234660151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8117330060 + 8117330061.

It is an arithmetic number, because the mean of its divisors is an integer number (8117330061).

Almost surely, 2^16234660121 is an apocalyptic number.

It is an amenable number.

16234660121 is a deficient number, since it is larger than the sum of its proper divisors (1).

16234660121 is an equidigital number, since it uses as much as digits as its factorization.

16234660121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10368, while the sum is 32.

The spelling of 16234660121 in words is "sixteen billion, two hundred thirty-four million, six hundred sixty thousand, one hundred twenty-one".