400022466221 has 4 divisors (see below), whose sum is σ = 457168532832. Its totient is φ = 342876399612.

The previous prime is 400022466157. The next prime is 400022466223. The reversal of 400022466221 is 122664220004.

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 400022466221 - 2⁶ = 400022466157 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400022466223) 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, 28573033295 + ... + 28573033308.

It is an arithmetic number, because the mean of its divisors is an integer number (114292133208).

Almost surely, 2^400022466221 is an apocalyptic number.

It is an amenable number.

400022466221 is a deficient number, since it is larger than the sum of its proper divisors (57146066611).

400022466221 is an equidigital number, since it uses as much as digits as its factorization.

400022466221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57146066610.

The product of its (nonzero) digits is 9216, while the sum is 29.

Adding to 400022466221 its reverse (122664220004), we get a palindrome (522686686225).

The spelling of 400022466221 in words is "four hundred billion, twenty-two million, four hundred sixty-six thousand, two hundred twenty-one".