213221010423 has 8 divisors (see below), whose sum is σ = 284296843008. Its totient is φ = 142146259064.

The previous prime is 213221010397. The next prime is 213221010427. The reversal of 213221010423 is 324010122312.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-213221010423 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 213221010423.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213221010427) 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, 519586 + ... + 834512.

It is an arithmetic number, because the mean of its divisors is an integer number (35537105376).

Almost surely, 2^213221010423 is an apocalyptic number.

213221010423 is a deficient number, since it is larger than the sum of its proper divisors (71075832585).

213221010423 is a wasteful number, since it uses less digits than its factorization.

213221010423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 540613.

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 213221010423 its reverse (324010122312), we get a palindrome (537231132735).

The spelling of 213221010423 in words is "two hundred thirteen billion, two hundred twenty-one million, ten thousand, four hundred twenty-three".