13223131213121 has 8 divisors (see below), whose sum is σ = 13700973821760. Its totient is φ = 12753745995952.

The previous prime is 13223131213073. The next prime is 13223131213133. The reversal of 13223131213121 is 12131213132231.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13223131213121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13223131213421) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2114344685 + ... + 2114350938.

It is an arithmetic number, because the mean of its divisors is an integer number (1712621727720).

Almost surely, 2^{13223131213121} is an apocalyptic number.

It is an amenable number.

13223131213121 is a deficient number, since it is larger than the sum of its proper divisors (477842608639).

13223131213121 is an equidigital number, since it uses as much as digits as its factorization.

13223131213121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4228695735.

The product of its digits is 1296, while the sum is 26.

Adding to 13223131213121 its reverse (12131213132231), we get a palindrome (25354344345352).

The spelling of 13223131213121 in words is "thirteen trillion, two hundred twenty-three billion, one hundred thirty-one million, two hundred thirteen thousand, one hundred twenty-one".