40421220221224 has 8 divisors (see below), whose sum is σ = 75789787914810. Its totient is φ = 20210610110608.

The previous prime is 40421220221219. The next prime is 40421220221269. The reversal of 40421220221224 is 42212202212404.

It can be written as a sum of positive squares in only one way, i.e., 40019920776900 + 401299444324 = 6326130^2 + 633482^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 40421220221192 and 40421220221201.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2526326263819 + ... + 2526326263834.

Almost surely, 2^{40421220221224} is an apocalyptic number.

It is an amenable number.

40421220221224 is a deficient number, since it is larger than the sum of its proper divisors (35368567693586).

40421220221224 is a wasteful number, since it uses less digits than its factorization.

40421220221224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5052652527659 (or 5052652527655 counting only the distinct ones).

The product of its (nonzero) digits is 8192, while the sum is 28.

Adding to 40421220221224 its reverse (42212202212404), we get a palindrome (82633422433628).

The spelling of 40421220221224 in words is "forty trillion, four hundred twenty-one billion, two hundred twenty million, two hundred twenty-one thousand, two hundred twenty-four".