13122223101220 has 24 divisors (see below), whose sum is σ = 27556938247608. Its totient is φ = 5248837862400.

The previous prime is 13122223101191. The next prime is 13122223101263. The reversal of 13122223101220 is 2210132222131.

13122223101220 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 308300341504 + 12813922759716 = 555248^2 + 3579654^2 .

It is a junction number, because it is equal to n+sod(n) for n = 13122223101191 and 13122223101200.

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, 1082391 + ... + 5236030.

It is an arithmetic number, because the mean of its divisors is an integer number (1148205760317).

Almost surely, 2^{13122223101220} is an apocalyptic number.

13122223101220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13122223101220 is an abundant number, since it is smaller than the sum of its proper divisors (14434715146388).

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

13122223101220 is a wasteful number, since it uses less digits than its factorization.

13122223101220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6422271 (or 6422269 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 22.

Adding to 13122223101220 its reverse (2210132222131), we get a palindrome (15332355323351).

The spelling of 13122223101220 in words is "thirteen trillion, one hundred twenty-two billion, two hundred twenty-three million, one hundred one thousand, two hundred twenty".