21230300213 has 8 divisors (see below), whose sum is σ = 23456495808. Its totient is φ = 19112699584.

The previous prime is 21230300207. The next prime is 21230300233. The reversal of 21230300213 is 31200303212.

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 21230300213 - 2⁴ = 21230300197 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21230300191 and 21230300200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21230300233) 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, 27148331 + ... + 27149112.

It is an arithmetic number, because the mean of its divisors is an integer number (2932061976).

Almost surely, 2^21230300213 is an apocalyptic number.

21230300213 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

21230300213 is a deficient number, since it is larger than the sum of its proper divisors (2226195595).

21230300213 is a wasteful number, since it uses less digits than its factorization.

21230300213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54297483.

The product of its (nonzero) digits is 216, while the sum is 17.

Adding to 21230300213 its reverse (31200303212), we get a palindrome (52430603425).

The spelling of 21230300213 in words is "twenty-one billion, two hundred thirty million, three hundred thousand, two hundred thirteen".