40212221312 has 16 divisors (see below), whose sum is σ = 80110284900. Its totient is φ = 20106110592.

The previous prime is 40212221297. The next prime is 40212221333. The reversal of 40212221312 is 21312221204.

It is a tau number, because it is divible by the number of its divisors (16).

It is a congruent number.

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, 157078862 + ... + 157079117.

Almost surely, 2^40212221312 is an apocalyptic number.

It is an amenable number.

40212221312 is a deficient number, since it is larger than the sum of its proper divisors (39898063588).

40212221312 is an equidigital number, since it uses as much as digits as its factorization.

40212221312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 314157993 (or 314157981 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 40212221312 its reverse (21312221204), we get a palindrome (61524442516).

The spelling of 40212221312 in words is "forty billion, two hundred twelve million, two hundred twenty-one thousand, three hundred twelve".