13121213112222 has 32 divisors (see below), whose sum is σ = 26948899169280. Its totient is φ = 4257551756640.

The previous prime is 13121213112209. The next prime is 13121213112251. The reversal of 13121213112222 is 22221131212131.

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 13121213112192 and 13121213112201.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 194909193 + ... + 194976500.

It is an arithmetic number, because the mean of its divisors is an integer number (842153099040).

Almost surely, 2^{13121213112222} is an apocalyptic number.

13121213112222 is an abundant number, since it is smaller than the sum of its proper divisors (13827686057058).

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

13121213112222 is a wasteful number, since it uses less digits than its factorization.

13121213112222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 389885848.

The product of its digits is 576, while the sum is 24.

Adding to 13121213112222 its reverse (22221131212131), we get a palindrome (35342344324353).

The spelling of 13121213112222 in words is "thirteen trillion, one hundred twenty-one billion, two hundred thirteen million, one hundred twelve thousand, two hundred twenty-two".