21023300213 has 8 divisors (see below), whose sum is σ = 21940106688. Its totient is φ = 20106722944.

The previous prime is 21023300209. The next prime is 21023300269. The reversal of 21023300213 is 31200332012.

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 21023300213 - 2² = 21023300209 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21023300191 and 21023300200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21023300113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 145445 + ... + 251397.

It is an arithmetic number, because the mean of its divisors is an integer number (2742513336).

Almost surely, 2^21023300213 is an apocalyptic number.

21023300213 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

21023300213 is a deficient number, since it is larger than the sum of its proper divisors (916806475).

21023300213 is a wasteful number, since it uses less digits than its factorization.

21023300213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114603.

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

Adding to 21023300213 its reverse (31200332012), we get a palindrome (52223632225).

The spelling of 21023300213 in words is "twenty-one billion, twenty-three million, three hundred thousand, two hundred thirteen".