13121213111232 has 84 divisors (see below), whose sum is σ = 35872557447528. Its totient is φ = 4232649331200.

The previous prime is 13121213111191. The next prime is 13121213111249. The reversal of 13121213111232 is 23211131212131.

It is a Harshad number since it is a multiple of its sum of digits (24).

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 35372019 + ... + 35741042.

Almost surely, 2^{13121213111232} is an apocalyptic number.

13121213111232 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

13121213111232 is an abundant number, since it is smaller than the sum of its proper divisors (22751344336296).

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

13121213111232 is an equidigital number, since it uses as much as digits as its factorization.

13121213111232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71113138 (or 71113097 counting only the distinct ones).

The product of its digits is 432, while the sum is 24.

Adding to 13121213111232 its reverse (23211131212131), we get a palindrome (36332344323363).

The spelling of 13121213111232 in words is "thirteen trillion, one hundred twenty-one billion, two hundred thirteen million, one hundred eleven thousand, two hundred thirty-two".