22400223221 has 4 divisors (see below), whose sum is σ = 22400971872. Its totient is φ = 22399474572.

The previous prime is 22400223211. The next prime is 22400223233. The reversal of 22400223221 is 12232200422.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 22400223221 - 2¹⁴ = 22400206837 is a prime.

It is a super-2 number, since 2×22400223221² (a number of 22 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 = 22400223193 and 22400223202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22400223211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 327491 + ... + 389936.

It is an arithmetic number, because the mean of its divisors is an integer number (5600242968).

Almost surely, 2^22400223221 is an apocalyptic number.

It is an amenable number.

22400223221 is a deficient number, since it is larger than the sum of its proper divisors (748651).

22400223221 is an equidigital number, since it uses as much as digits as its factorization.

22400223221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 748650.

The product of its (nonzero) digits is 768, while the sum is 20.

Adding to 22400223221 its reverse (12232200422), we get a palindrome (34632423643).

The spelling of 22400223221 in words is "twenty-two billion, four hundred million, two hundred twenty-three thousand, two hundred twenty-one".