122431200005 has 4 divisors (see below), whose sum is σ = 146917440012. Its totient is φ = 97944960000.

The previous prime is 122431199963. The next prime is 122431200007. The reversal of 122431200005 is 500002134221.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 34408024036 + 88023175969 = 185494^2 + 296687^2 .

It is not a de Polignac number, because 122431200005 - 2⁶ = 122431199941 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 122431200005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122431200007) 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, 12243119996 + ... + 12243120005.

It is an arithmetic number, because the mean of its divisors is an integer number (36729360003).

Almost surely, 2^122431200005 is an apocalyptic number.

It is an amenable number.

122431200005 is a deficient number, since it is larger than the sum of its proper divisors (24486240007).

122431200005 is an equidigital number, since it uses as much as digits as its factorization.

122431200005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24486240006.

The product of its (nonzero) digits is 480, while the sum is 20.

Adding to 122431200005 its reverse (500002134221), we get a palindrome (622433334226).

The spelling of 122431200005 in words is "one hundred twenty-two billion, four hundred thirty-one million, two hundred thousand, five".