400421401103224 has 32 divisors (see below), whose sum is σ = 785465955489600. Its totient is φ = 191171608199680.

The previous prime is 400421401103221. The next prime is 400421401103267. The reversal of 400421401103224 is 422301104124004.

It is a super-2 number, since 2×400421401103224² (a number of 30 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 400421401103192 and 400421401103201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400421401103221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12987186229 + ... + 12987217060.

It is an arithmetic number, because the mean of its divisors is an integer number (24545811109050).

Almost surely, 2^{400421401103224} is an apocalyptic number.

It is an amenable number.

400421401103224 is a deficient number, since it is larger than the sum of its proper divisors (385044554386376).

400421401103224 is a wasteful number, since it uses less digits than its factorization.

400421401103224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25974403383 (or 25974403379 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 28.

Adding to 400421401103224 its reverse (422301104124004), we get a palindrome (822722505227228).

The spelling of 400421401103224 in words is "four hundred trillion, four hundred twenty-one billion, four hundred one million, one hundred three thousand, two hundred twenty-four".