13111232212321 has 12 divisors (see below), whose sum is σ = 13552027798932. Its totient is φ = 12684347004000.

The previous prime is 13111232212307. The next prime is 13111232212489. The reversal of 13111232212321 is 12321223211131.

It can be written as a sum of positive squares in 2 ways, for example, as 8630897989921 + 4480334222400 = 2937839^2 + 2116680^2 .

It is not a de Polignac number, because 13111232212321 - 2⁷ = 13111232212193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13111232215321) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 977511 + ... + 5213251.

It is an arithmetic number, because the mean of its divisors is an integer number (1129335649911).

Almost surely, 2^{13111232212321} is an apocalyptic number.

It is an amenable number.

13111232212321 is a deficient number, since it is larger than the sum of its proper divisors (440795586611).

13111232212321 is an equidigital number, since it uses as much as digits as its factorization.

13111232212321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4239024 (or 4238993 counting only the distinct ones).

The product of its digits is 864, while the sum is 25.

Adding to 13111232212321 its reverse (12321223211131), we get a palindrome (25432455423452).

The spelling of 13111232212321 in words is "thirteen trillion, one hundred eleven billion, two hundred thirty-two million, two hundred twelve thousand, three hundred twenty-one".