213021021323 has 8 divisors (see below), whose sum is σ = 234687427056. Its totient is φ = 191738092000.

The previous prime is 213021021313. The next prime is 213021021349. The reversal of 213021021323 is 323120120312.

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 213021021323 - 2¹⁴ = 213021004939 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 213021021295 and 213021021304.

It is not an unprimeable number, because it can be changed into a prime (213021021313) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 95867936 + ... + 95870157.

It is an arithmetic number, because the mean of its divisors is an integer number (29335928382).

Almost surely, 2^213021021323 is an apocalyptic number.

213021021323 is a deficient number, since it is larger than the sum of its proper divisors (21666405733).

213021021323 is a wasteful number, since it uses less digits than its factorization.

213021021323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 191738205.

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

Adding to 213021021323 its reverse (323120120312), we get a palindrome (536141141635).

The spelling of 213021021323 in words is "two hundred thirteen billion, twenty-one million, twenty-one thousand, three hundred twenty-three".