213144225350401 has 4 divisors (see below), whose sum is σ = 213171974899204. Its totient is φ = 213116475801600.

The previous prime is 213144225350389. The next prime is 213144225350423. The reversal of 213144225350401 is 104053522441312.

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 174552187712400 + 38592037638001 = 13211820^2 + 6212249^2 .

It is a cyclic number.

It is not a de Polignac number, because 213144225350401 - 2²⁹ = 213143688479489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (213144225350101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13874762880 + ... + 13874778241.

It is an arithmetic number, because the mean of its divisors is an integer number (53292993724801).

Almost surely, 2^{213144225350401} is an apocalyptic number.

It is an amenable number.

213144225350401 is a deficient number, since it is larger than the sum of its proper divisors (27749548803).

213144225350401 is an equidigital number, since it uses as much as digits as its factorization.

213144225350401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27749548802.

The product of its (nonzero) digits is 115200, while the sum is 37.

Adding to 213144225350401 its reverse (104053522441312), we get a palindrome (317197747791713).

The spelling of 213144225350401 in words is "two hundred thirteen trillion, one hundred forty-four billion, two hundred twenty-five million, three hundred fifty thousand, four hundred one".