21333320100231 has 16 divisors (see below), whose sum is σ = 28978971398400. Its totient is φ = 13956899140800.

The previous prime is 21333320100203. The next prime is 21333320100293. The reversal of 21333320100231 is 13200102333312.

It is not a de Polignac number, because 21333320100231 - 2¹³ = 21333320092039 is a prime.

It is a super-2 number, since 2×21333320100231² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21333320100331) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 244711245 + ... + 244798406.

It is an arithmetic number, because the mean of its divisors is an integer number (1811185712400).

Almost surely, 2^{21333320100231} is an apocalyptic number.

21333320100231 is a deficient number, since it is larger than the sum of its proper divisors (7645651298169).

21333320100231 is a wasteful number, since it uses less digits than its factorization.

21333320100231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 489509926.

The product of its (nonzero) digits is 1944, while the sum is 24.

Adding to 21333320100231 its reverse (13200102333312), we get a palindrome (34533422433543).

The spelling of 21333320100231 in words is "twenty-one trillion, three hundred thirty-three billion, three hundred twenty million, one hundred thousand, two hundred thirty-one".