13021223055 has 16 divisors (see below), whose sum is σ = 20856948864. Its totient is φ = 6936988320.

The previous prime is 13021223041. The next prime is 13021223069. The reversal of 13021223055 is 55032212031.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (13021223041) and next prime (13021223069).

It is not a de Polignac number, because 13021223055 - 2¹⁷ = 13021091983 is a prime.

It is a super-3 number, since 3×13021223055³ (a number of 31 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 464941 + ... + 492150.

It is an arithmetic number, because the mean of its divisors is an integer number (1303559304).

Almost surely, 2^13021223055 is an apocalyptic number.

13021223055 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

13021223055 is a deficient number, since it is larger than the sum of its proper divisors (7835725809).

13021223055 is an equidigital number, since it uses as much as digits as its factorization.

13021223055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 958006.

The product of its (nonzero) digits is 1800, while the sum is 24.

Adding to 13021223055 its reverse (55032212031), we get a palindrome (68053435086).

The spelling of 13021223055 in words is "thirteen billion, twenty-one million, two hundred twenty-three thousand, fifty-five".