123881222005 has 8 divisors (see below), whose sum is σ = 151094474424. Its totient is φ = 97480305600.

The previous prime is 123881221987. The next prime is 123881222009. The reversal of 123881222005 is 500222188321.

It can be written as a sum of positive squares in 4 ways, for example, as 12233687236 + 111647534769 = 110606^2 + 334137^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 123881222005 - 2¹⁷ = 123881090933 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123881222009) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 203083666 + ... + 203084275.

It is an arithmetic number, because the mean of its divisors is an integer number (18886809303).

Almost surely, 2^123881222005 is an apocalyptic number.

It is an amenable number.

123881222005 is a deficient number, since it is larger than the sum of its proper divisors (27213252419).

123881222005 is an equidigital number, since it uses as much as digits as its factorization.

123881222005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 406168007.

The product of its (nonzero) digits is 15360, while the sum is 34.

The spelling of 123881222005 in words is "one hundred twenty-three billion, eight hundred eighty-one million, two hundred twenty-two thousand, five".