12403220055 has 8 divisors (see below), whose sum is σ = 19845152112. Its totient is φ = 6615050688.

The previous prime is 12403220041. The next prime is 12403220069. The reversal of 12403220055 is 55002230421.

It is an interprime number because it is at equal distance from previous prime (12403220041) and next prime (12403220069).

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

It is not a de Polignac number, because 12403220055 - 2⁵ = 12403220023 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 413440654 + ... + 413440683.

It is an arithmetic number, because the mean of its divisors is an integer number (2480644014).

Almost surely, 2^12403220055 is an apocalyptic number.

12403220055 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

12403220055 is a deficient number, since it is larger than the sum of its proper divisors (7441932057).

12403220055 is an equidigital number, since it uses as much as digits as its factorization.

12403220055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 826881345.

The product of its (nonzero) digits is 2400, while the sum is 24.

Adding to 12403220055 its reverse (55002230421), we get a palindrome (67405450476).

The spelling of 12403220055 in words is "twelve billion, four hundred three million, two hundred twenty thousand, fifty-five".