22421204224231 has 4 divisors (see below), whose sum is σ = 22508446264272. Its totient is φ = 22333962184192.

The previous prime is 22421204224219. The next prime is 22421204224247. The reversal of 22421204224231 is 13242240212422.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 22421204224231 - 2⁴³ = 13625111202023 is a prime.

It is a super-2 number, since 2×22421204224231² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22421204224193 and 22421204224202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22421204222231) 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, 43621019635 + ... + 43621020148.

It is an arithmetic number, because the mean of its divisors is an integer number (5627111566068).

Almost surely, 2^{22421204224231} is an apocalyptic number.

22421204224231 is a deficient number, since it is larger than the sum of its proper divisors (87242040041).

22421204224231 is an equidigital number, since it uses as much as digits as its factorization.

22421204224231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87242040040.

The product of its (nonzero) digits is 24576, while the sum is 31.

Adding to 22421204224231 its reverse (13242240212422), we get a palindrome (35663444436653).

The spelling of 22421204224231 in words is "twenty-two trillion, four hundred twenty-one billion, two hundred four million, two hundred twenty-four thousand, two hundred thirty-one".