213302231021 has 8 divisors (see below), whose sum is σ = 232698062784. Its totient is φ = 193907185920.

The previous prime is 213302231017. The next prime is 213302231069. The reversal of 213302231021 is 120132203312.

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 213302231021 - 2² = 213302231017 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 213302230984 and 213302231002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213302231221) 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, 467960 + ... + 803486.

It is an arithmetic number, because the mean of its divisors is an integer number (29087257848).

Almost surely, 2^213302231021 is an apocalyptic number.

It is an amenable number.

213302231021 is a deficient number, since it is larger than the sum of its proper divisors (19395831763).

213302231021 is a wasteful number, since it uses less digits than its factorization.

213302231021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 393331.

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

Adding to 213302231021 its reverse (120132203312), we get a palindrome (333434434333).

The spelling of 213302231021 in words is "two hundred thirteen billion, three hundred two million, two hundred thirty-one thousand, twenty-one".