213042326521 has 8 divisors (see below), whose sum is σ = 213951585600. Its totient is φ = 212133936720.

The previous prime is 213042326501. The next prime is 213042326561. The reversal of 213042326521 is 125623240312.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 213042326521 - 2³³ = 204452391929 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (213042326501) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 276270 + ... + 708808.

It is an arithmetic number, because the mean of its divisors is an integer number (26743948200).

Almost surely, 2^213042326521 is an apocalyptic number.

It is an amenable number.

213042326521 is a deficient number, since it is larger than the sum of its proper divisors (909259079).

213042326521 is a wasteful number, since it uses less digits than its factorization.

213042326521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 434639.

The product of its (nonzero) digits is 17280, while the sum is 31.

Adding to 213042326521 its reverse (125623240312), we get a palindrome (338665566833).

The spelling of 213042326521 in words is "two hundred thirteen billion, forty-two million, three hundred twenty-six thousand, five hundred twenty-one".