21422311224321 has 8 divisors (see below), whose sum is σ = 32643521865664. Its totient is φ = 12241320699600.

The previous prime is 21422311224319. The next prime is 21422311224337. The reversal of 21422311224321 is 12342211322412.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 21422311224321 - 2¹ = 21422311224319 is a prime.

It is a super-2 number, since 2×21422311224321² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21422311222321) 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, 510055029130 + ... + 510055029171.

It is an arithmetic number, because the mean of its divisors is an integer number (4080440233208).

Almost surely, 2^{21422311224321} is an apocalyptic number.

21422311224321 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

21422311224321 is a deficient number, since it is larger than the sum of its proper divisors (11221210641343).

21422311224321 is a wasteful number, since it uses less digits than its factorization.

21422311224321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1020110058311.

The product of its digits is 9216, while the sum is 30.

Adding to 21422311224321 its reverse (12342211322412), we get a palindrome (33764522546733).

The spelling of 21422311224321 in words is "twenty-one trillion, four hundred twenty-two billion, three hundred eleven million, two hundred twenty-four thousand, three hundred twenty-one".