21221332413303 has 8 divisors (see below), whose sum is σ = 30867392601216. Its totient is φ = 12861413583800.

The previous prime is 21221332413283. The next prime is 21221332413311. The reversal of 21221332413303 is 30331423312212.

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 21221332413303 - 2¹⁷ = 21221332282231 is a prime.

It is a super-2 number, since 2×21221332413303² (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 (21221332413313) 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, 321535339563 + ... + 321535339628.

It is an arithmetic number, because the mean of its divisors is an integer number (3858424075152).

Almost surely, 2^{21221332413303} is an apocalyptic number.

21221332413303 is a deficient number, since it is larger than the sum of its proper divisors (9646060187913).

21221332413303 is a wasteful number, since it uses less digits than its factorization.

21221332413303 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 643070679205.

The product of its (nonzero) digits is 15552, while the sum is 30.

Adding to 21221332413303 its reverse (30331423312212), we get a palindrome (51552755725515).

The spelling of 21221332413303 in words is "twenty-one trillion, two hundred twenty-one billion, three hundred thirty-two million, four hundred thirteen thousand, three hundred three".