13121222412 has 24 divisors (see below), whose sum is σ = 30681758016. Its totient is φ = 4364373328.

The previous prime is 13121222381. The next prime is 13121222419. The reversal of 13121222412 is 21422212131.

It is a happy number.

13121222412 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not an unprimeable number, because it can be changed into a prime (13121222419) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1165098 + ... + 1176305.

It is an arithmetic number, because the mean of its divisors is an integer number (1278406584).

Almost surely, 2^13121222412 is an apocalyptic number.

13121222412 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

13121222412 is an abundant number, since it is smaller than the sum of its proper divisors (17560535604).

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

13121222412 is a wasteful number, since it uses less digits than its factorization.

13121222412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2341877 (or 2341875 counting only the distinct ones).

The product of its digits is 384, while the sum is 21.

Adding to 13121222412 its reverse (21422212131), we get a palindrome (34543434543).

The spelling of 13121222412 in words is "thirteen billion, one hundred twenty-one million, two hundred twenty-two thousand, four hundred twelve".