201321323012 has 12 divisors (see below), whose sum is σ = 352747812060. Its totient is φ = 100536233856.

The previous prime is 201321322999. The next prime is 201321323051. The reversal of 201321323012 is 210323123102.

It can be written as a sum of positive squares in 2 ways, for example, as 139745878276 + 61575444736 = 373826^2 + 248144^2 .

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, 31103273 + ... + 31109744.

It is an arithmetic number, because the mean of its divisors is an integer number (29395651005).

Almost surely, 2^201321323012 is an apocalyptic number.

It is an amenable number.

201321323012 is a deficient number, since it is larger than the sum of its proper divisors (151426489048).

201321323012 is a wasteful number, since it uses less digits than its factorization.

201321323012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62213830 (or 62213828 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 201321323012 its reverse (210323123102), we get a palindrome (411644446114).

The spelling of 201321323012 in words is "two hundred one billion, three hundred twenty-one million, three hundred twenty-three thousand, twelve".