400442521222 has 8 divisors (see below), whose sum is σ = 600666546672. Its totient is φ = 200220339000.

The previous prime is 400442521189. The next prime is 400442521253. The reversal of 400442521222 is 222125244004.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 415972 + ... + 986872.

It is an arithmetic number, because the mean of its divisors is an integer number (75083318334).

Almost surely, 2^400442521222 is an apocalyptic number.

400442521222 is a deficient number, since it is larger than the sum of its proper divisors (200224025450).

400442521222 is a wasteful number, since it uses less digits than its factorization.

400442521222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 921614.

The product of its (nonzero) digits is 10240, while the sum is 28.

Adding to 400442521222 its reverse (222125244004), we get a palindrome (622567765226).

The spelling of 400442521222 in words is "four hundred billion, four hundred forty-two million, five hundred twenty-one thousand, two hundred twenty-two".