13210113021121 has 4 divisors (see below), whose sum is σ = 13210569184644. Its totient is φ = 13209656857600.

The previous prime is 13210113021101. The next prime is 13210113021187. The reversal of 13210113021121 is 12112031101231.

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

It can be written as a sum of positive squares in 2 ways, for example, as 5439599967025 + 7770513054096 = 2332295^2 + 2787564^2 .

It is a cyclic number.

It is not a de Polignac number, because 13210113021121 - 2²¹ = 13210110923969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13210113021101) 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, 228038320 + ... + 228096241.

It is an arithmetic number, because the mean of its divisors is an integer number (3302642296161).

Almost surely, 2^{13210113021121} is an apocalyptic number.

It is an amenable number.

13210113021121 is a deficient number, since it is larger than the sum of its proper divisors (456163523).

13210113021121 is an equidigital number, since it uses as much as digits as its factorization.

13210113021121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 456163522.

The product of its (nonzero) digits is 72, while the sum is 19.

Adding to 13210113021121 its reverse (12112031101231), we get a palindrome (25322144122352).

The spelling of 13210113021121 in words is "thirteen trillion, two hundred ten billion, one hundred thirteen million, twenty-one thousand, one hundred twenty-one".