40320321212 has 12 divisors (see below), whose sum is σ = 73628412816. Its totient is φ = 19283631840.

The previous prime is 40320321161. The next prime is 40320321257. The reversal of 40320321212 is 21212302304.

40320321212 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 219132089 + ... + 219132272.

It is an arithmetic number, because the mean of its divisors is an integer number (6135701068).

Almost surely, 2^40320321212 is an apocalyptic number.

It is an amenable number.

40320321212 is a deficient number, since it is larger than the sum of its proper divisors (33308091604).

40320321212 is a wasteful number, since it uses less digits than its factorization.

40320321212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 438264388 (or 438264386 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 40320321212 its reverse (21212302304), we get a palindrome (61532623516).

The spelling of 40320321212 in words is "forty billion, three hundred twenty million, three hundred twenty-one thousand, two hundred twelve".