13121213322 has 32 divisors (see below), whose sum is σ = 29996479872. Its totient is φ = 3748276224.

The previous prime is 13121213317. The next prime is 13121213323. The reversal of 13121213322 is 22331212131.

It is a Harshad number since it is a multiple of its sum of digits (21).

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 (13121213323) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 256858 + ... + 303674.

It is an arithmetic number, because the mean of its divisors is an integer number (937389996).

Almost surely, 2^13121213322 is an apocalyptic number.

13121213322 is an abundant number, since it is smaller than the sum of its proper divisors (16875266550).

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

13121213322 is a wasteful number, since it uses less digits than its factorization.

13121213322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53502.

The product of its digits is 432, while the sum is 21.

Adding to 13121213322 its reverse (22331212131), we get a palindrome (35452425453).

The spelling of 13121213322 in words is "thirteen billion, one hundred twenty-one million, two hundred thirteen thousand, three hundred twenty-two".