13122412443420 has 288 divisors, whose sum is σ = 43268548958208. Its totient is φ = 2962447907328.

The previous prime is 13122412443409. The next prime is 13122412443421. The reversal of 13122412443420 is 2434421422131.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13122412443421) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1475584494 + ... + 1475593386.

It is an arithmetic number, because the mean of its divisors is an integer number (150238017216).

Almost surely, 2^{13122412443420} is an apocalyptic number.

13122412443420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13122412443420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21634274479104).

13122412443420 is an abundant number, since it is smaller than the sum of its proper divisors (30146136514788).

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

13122412443420 is a wasteful number, since it uses less digits than its factorization.

13122412443420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15049 (or 15040 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 33.

Adding to 13122412443420 its reverse (2434421422131), we get a palindrome (15556833865551).

The spelling of 13122412443420 in words is "thirteen trillion, one hundred twenty-two billion, four hundred twelve million, four hundred forty-three thousand, four hundred twenty".