213143342101 has 4 divisors (see below), whose sum is σ = 225681185772. Its totient is φ = 200605498432.

The previous prime is 213143342047. The next prime is 213143342107. The reversal of 213143342101 is 101243341312.

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 157918812100 + 55224530001 = 397390^2 + 234999^2 .

It is a cyclic number.

It is not a de Polignac number, because 213143342101 - 2¹⁵ = 213143309333 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213143342107) 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, 6268921810 + ... + 6268921843.

It is an arithmetic number, because the mean of its divisors is an integer number (56420296443).

Almost surely, 2^213143342101 is an apocalyptic number.

It is an amenable number.

213143342101 is a deficient number, since it is larger than the sum of its proper divisors (12537843671).

213143342101 is a wasteful number, since it uses less digits than its factorization.

213143342101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12537843670.

The product of its (nonzero) digits is 1728, while the sum is 25.

Adding to 213143342101 its reverse (101243341312), we get a palindrome (314386683413).

The spelling of 213143342101 in words is "two hundred thirteen billion, one hundred forty-three million, three hundred forty-two thousand, one hundred one".