213123032201 has 4 divisors (see below), whose sum is σ = 225659681172. Its totient is φ = 200586383232.

The previous prime is 213123032183. The next prime is 213123032207. The reversal of 213123032201 is 102230321312.

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 66215640976 + 146907391225 = 257324^2 + 383285^2 .

It is a cyclic number.

It is not a de Polignac number, because 213123032201 - 2³⁰ = 212049290377 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (213123032207) 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, 6268324460 + ... + 6268324493.

It is an arithmetic number, because the mean of its divisors is an integer number (56414920293).

Almost surely, 2^213123032201 is an apocalyptic number.

It is an amenable number.

213123032201 is a deficient number, since it is larger than the sum of its proper divisors (12536648971).

213123032201 is a wasteful number, since it uses less digits than its factorization.

213123032201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12536648970.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 213123032201 its reverse (102230321312), we get a palindrome (315353353513).

The spelling of 213123032201 in words is "two hundred thirteen billion, one hundred twenty-three million, thirty-two thousand, two hundred one".