213430420221 has 8 divisors (see below), whose sum is σ = 285158236224. Its totient is φ = 141994775520.

The previous prime is 213430420199. The next prime is 213430420243. The reversal of 213430420221 is 122024034312.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (213430420199) and next prime (213430420243).

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

It is not a de Polignac number, because 213430420221 - 2²² = 213426225917 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 213430420191 and 213430420200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213432420221) 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, 73041120 + ... + 73044041.

It is an arithmetic number, because the mean of its divisors is an integer number (35644779528).

Almost surely, 2^213430420221 is an apocalyptic number.

It is an amenable number.

213430420221 is a deficient number, since it is larger than the sum of its proper divisors (71727816003).

213430420221 is a wasteful number, since it uses less digits than its factorization.

213430420221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146085651.

The product of its (nonzero) digits is 2304, while the sum is 24.

Adding to 213430420221 its reverse (122024034312), we get a palindrome (335454454533).

The spelling of 213430420221 in words is "two hundred thirteen billion, four hundred thirty million, four hundred twenty thousand, two hundred twenty-one".