13122231214420 has 24 divisors (see below), whose sum is σ = 27556894446984. Its totient is φ = 5248852695936.

The previous prime is 13122231214403. The next prime is 13122231214453. The reversal of 13122231214420 is 2441213222131.

It can be written as a sum of positive squares in 4 ways, for example, as 7402164958864 + 5720066255556 = 2720692^2 + 2391666^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 293202 + ... + 5131318.

It is an arithmetic number, because the mean of its divisors is an integer number (1148203935291).

Almost surely, 2^{13122231214420} is an apocalyptic number.

13122231214420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13122231214420 is an abundant number, since it is smaller than the sum of its proper divisors (14434663232564).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13122231214420 is a wasteful number, since it uses less digits than its factorization.

13122231214420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4973739 (or 4973737 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 28.

Adding to 13122231214420 its reverse (2441213222131), we get a palindrome (15563444436551).

The spelling of 13122231214420 in words is "thirteen trillion, one hundred twenty-two billion, two hundred thirty-one million, two hundred fourteen thousand, four hundred twenty".