122152586161 has 4 divisors (see below), whose sum is σ = 127463568192. Its totient is φ = 116841604132.

The previous prime is 122152586123. The next prime is 122152586173. The reversal of 122152586161 is 161685251221.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 161685251221 = 13 ⋅12437327017.

It is a cyclic number.

It is not a de Polignac number, because 122152586161 - 2⁷ = 122152586033 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (122152586111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2655490981 + ... + 2655491026.

It is an arithmetic number, because the mean of its divisors is an integer number (31865892048).

Almost surely, 2^122152586161 is an apocalyptic number.

It is an amenable number.

122152586161 is a deficient number, since it is larger than the sum of its proper divisors (5310982031).

122152586161 is an equidigital number, since it uses as much as digits as its factorization.

122152586161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5310982030.

The product of its digits is 57600, while the sum is 40.

The spelling of 122152586161 in words is "one hundred twenty-two billion, one hundred fifty-two million, five hundred eighty-six thousand, one hundred sixty-one".