13121111222 has 8 divisors (see below), whose sum is σ = 19682333400. Its totient is φ = 6560333424.

The previous prime is 13121111189. The next prime is 13121111239. The reversal of 13121111222 is 22211112131.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 13121111222.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23447 + ... + 163682.

It is an arithmetic number, because the mean of its divisors is an integer number (2460291675).

Almost surely, 2^13121111222 is an apocalyptic number.

13121111222 is a deficient number, since it is larger than the sum of its proper divisors (6561222178).

13121111222 is a wasteful number, since it uses less digits than its factorization.

13121111222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 222190.

The product of its digits is 48, while the sum is 17.

Adding to 13121111222 its reverse (22211112131), we get a palindrome (35332223353).

Subtracting 13121111222 from its reverse (22211112131), we obtain a palindrome (9090000909).

The spelling of 13121111222 in words is "thirteen billion, one hundred twenty-one million, one hundred eleven thousand, two hundred twenty-two".