213121344300041 has 4 divisors (see below), whose sum is σ = 213312142281732. Its totient is φ = 212930546318352.

The previous prime is 213121344299971. The next prime is 213121344300061. The reversal of 213121344300041 is 140003443121312.

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 52399067238400 + 160722277061641 = 7238720^2 + 12677629^2 .

It is a cyclic number.

It is not a de Polignac number, because 213121344300041 - 2¹⁴ = 213121344283657 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 213121344299977 and 213121344300013.

It is not an unprimeable number, because it can be changed into a prime (213121344300061) 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, 95398989170 + ... + 95398991403.

It is an arithmetic number, because the mean of its divisors is an integer number (53328035570433).

Almost surely, 2^{213121344300041} is an apocalyptic number.

It is an amenable number.

213121344300041 is a deficient number, since it is larger than the sum of its proper divisors (190797981691).

213121344300041 is a wasteful number, since it uses less digits than its factorization.

213121344300041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 190797981690.

The product of its (nonzero) digits is 6912, while the sum is 29.

Adding to 213121344300041 its reverse (140003443121312), we get a palindrome (353124787421353).

The spelling of 213121344300041 in words is "two hundred thirteen trillion, one hundred twenty-one billion, three hundred forty-four million, three hundred thousand, forty-one".