21301230300233 has 4 divisors (see below), whose sum is σ = 22939786477188. Its totient is φ = 19662674123280.

The previous prime is 21301230300223. The next prime is 21301230300239. The reversal of 21301230300233 is 33200303210312.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 9187858197904 + 12113372102329 = 3031148^2 + 3480427^2 .

It is a cyclic number.

It is not a de Polignac number, because 21301230300233 - 2¹⁸ = 21301230038089 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21301230300199 and 21301230300208.

It is not an unprimeable number, because it can be changed into a prime (21301230300239) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 819278088458 + ... + 819278088483.

It is an arithmetic number, because the mean of its divisors is an integer number (5734946619297).

Almost surely, 2^{21301230300233} is an apocalyptic number.

It is an amenable number.

21301230300233 is a deficient number, since it is larger than the sum of its proper divisors (1638556176955).

21301230300233 is a wasteful number, since it uses less digits than its factorization.

21301230300233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1638556176954.

The product of its (nonzero) digits is 1944, while the sum is 23.

Adding to 21301230300233 its reverse (33200303210312), we get a palindrome (54501533510545).

The spelling of 21301230300233 in words is "twenty-one trillion, three hundred one billion, two hundred thirty million, three hundred thousand, two hundred thirty-three".