21010200323 has 8 divisors (see below), whose sum is σ = 25275429120. Its totient is φ = 17060914440.

The previous prime is 21010200319. The next prime is 21010200331. The reversal of 21010200323 is 32300201012.

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 21010200323 - 2² = 21010200319 is a prime.

It is a super-2 number, since 2×21010200323² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21010200298 and 21010200307.

It is not an unprimeable number, because it can be changed into a prime (21010200353) 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, 78985583 + ... + 78985848.

It is an arithmetic number, because the mean of its divisors is an integer number (3159428640).

Almost surely, 2^21010200323 is an apocalyptic number.

21010200323 is a deficient number, since it is larger than the sum of its proper divisors (4265228797).

21010200323 is a wasteful number, since it uses less digits than its factorization.

21010200323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157971457.

The product of its (nonzero) digits is 72, while the sum is 14.

Adding to 21010200323 its reverse (32300201012), we get a palindrome (53310401335).

The spelling of 21010200323 in words is "twenty-one billion, ten million, two hundred thousand, three hundred twenty-three".