21322220201309 has 8 divisors (see below), whose sum is σ = 21898573984728. Its totient is φ = 20745870500160.

The previous prime is 21322220201299. The next prime is 21322220201351. The reversal of 21322220201309 is 90310202222312.

It can be written as a sum of positive squares in 4 ways, for example, as 18286185775225 + 3036034426084 = 4276235^2 + 1742422^2 .

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 21322220201309 - 2²⁰ = 21322219152733 is a prime.

It is a super-2 number, since 2×21322220201309² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21322220201809) 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, 11671739 + ... + 13374375.

It is an arithmetic number, because the mean of its divisors is an integer number (2737321748091).

Almost surely, 2^{21322220201309} is an apocalyptic number.

It is an amenable number.

21322220201309 is a deficient number, since it is larger than the sum of its proper divisors (576353783419).

21322220201309 is a wasteful number, since it uses less digits than its factorization.

21322220201309 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2041135.

The product of its (nonzero) digits is 5184, while the sum is 29.

The spelling of 21322220201309 in words is "twenty-one trillion, three hundred twenty-two billion, two hundred twenty million, two hundred one thousand, three hundred nine".