40022021312 has 56 divisors (see below), whose sum is σ = 97746104736. Its totient is φ = 15832885248.

The previous prime is 40022021293. The next prime is 40022021317. The reversal of 40022021312 is 21312022004.

It is a tau number, because it is divible by the number of its divisors (56).

It is not an unprimeable number, because it can be changed into a prime (40022021317) by changing a digit.

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 in 7 ways as a sum of consecutive naturals, for example, 3430133 + ... + 3441780.

It is an arithmetic number, because the mean of its divisors is an integer number (1745466156).

Almost surely, 2^40022021312 is an apocalyptic number.

It is an amenable number.

40022021312 is an abundant number, since it is smaller than the sum of its proper divisors (57724083424).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

40022021312 is a wasteful number, since it uses less digits than its factorization.

40022021312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6871945 (or 6871935 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 17.

Adding to 40022021312 its reverse (21312022004), we get a palindrome (61334043316).

The spelling of 40022021312 in words is "forty billion, twenty-two million, twenty-one thousand, three hundred twelve".