21223332113321 has 4 divisors (see below), whose sum is σ = 22855896122052. Its totient is φ = 19590768104592.

The previous prime is 21223332113317. The next prime is 21223332113353. The reversal of 21223332113321 is 12331123332212.

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 3181532179225 + 18041799934096 = 1783685^2 + 4247564^2 .

It is a cyclic number.

It is not a de Polignac number, because 21223332113321 - 2² = 21223332113317 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21223332113371) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 816282004346 + ... + 816282004371.

It is an arithmetic number, because the mean of its divisors is an integer number (5713974030513).

Almost surely, 2^{21223332113321} is an apocalyptic number.

It is an amenable number.

21223332113321 is a deficient number, since it is larger than the sum of its proper divisors (1632564008731).

21223332113321 is a wasteful number, since it uses less digits than its factorization.

21223332113321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1632564008730.

The product of its digits is 7776, while the sum is 29.

Adding to 21223332113321 its reverse (12331123332212), we get a palindrome (33554455445533).

The spelling of 21223332113321 in words is "twenty-one trillion, two hundred twenty-three billion, three hundred thirty-two million, one hundred thirteen thousand, three hundred twenty-one".