400002224210 has 32 divisors (see below), whose sum is σ = 737781534000. Its totient is φ = 156052618240.

The previous prime is 400002224207. The next prime is 400002224233. The reversal of 400002224210 is 12422200004.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 10237999489 + 389764224721 = 101183^2 + 624311^2 .

It is a super-2 number, since 2×400002224210² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 1272656 + ... + 1555524.

Almost surely, 2^400002224210 is an apocalyptic number.

400002224210 is a deficient number, since it is larger than the sum of its proper divisors (337779309790).

400002224210 is a wasteful number, since it uses less digits than its factorization.

400002224210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 286366.

The product of its (nonzero) digits is 256, while the sum is 17.

Adding to 400002224210 its reverse (12422200004), we get a palindrome (412424424214).

The spelling of 400002224210 in words is "four hundred billion, two million, two hundred twenty-four thousand, two hundred ten".