213300021 has 8 divisors (see below), whose sum is σ = 310254624. Its totient is φ = 129272720.

The previous prime is 213300019. The next prime is 213300067. The reversal of 213300021 is 120003312.

It is a happy number.

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 213300021 - 2¹ = 213300019 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213300121) 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, 3231786 + ... + 3231851.

It is an arithmetic number, because the mean of its divisors is an integer number (38781828).

Almost surely, 2^213300021 is an apocalyptic number.

It is an amenable number.

213300021 is a deficient number, since it is larger than the sum of its proper divisors (96954603).

213300021 is a wasteful number, since it uses less digits than its factorization.

213300021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6463651.

The product of its (nonzero) digits is 36, while the sum is 12.

The square root of 213300021 is about 14604.7944525077. The cubic root of 213300021 is about 597.4895299952.

Adding to 213300021 its reverse (120003312), we get a palindrome (333303333).

The spelling of 213300021 in words is "two hundred thirteen million, three hundred thousand, twenty-one".