13212120122203 has 4 divisors (see below), whose sum is σ = 13299617606608. Its totient is φ = 13124622637800.

The previous prime is 13212120122161. The next prime is 13212120122213. The reversal of 13212120122203 is 30222102121231.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13212120122203 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13212120122213) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 43748741976 + ... + 43748742277.

It is an arithmetic number, because the mean of its divisors is an integer number (3324904401652).

Almost surely, 2^{13212120122203} is an apocalyptic number.

13212120122203 is a deficient number, since it is larger than the sum of its proper divisors (87497484405).

13212120122203 is an equidigital number, since it uses as much as digits as its factorization.

13212120122203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87497484404.

The product of its (nonzero) digits is 576, while the sum is 22.

Adding to 13212120122203 its reverse (30222102121231), we get a palindrome (43434222243434).

The spelling of 13212120122203 in words is "thirteen trillion, two hundred twelve billion, one hundred twenty million, one hundred twenty-two thousand, two hundred three".