201002012312321 has 4 divisors (see below), whose sum is σ = 219274922522544. Its totient is φ = 182729102102100.

The previous prime is 201002012312303. The next prime is 201002012312341. The reversal of 201002012312321 is 123213210200102.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 201002012312321 - 2¹⁰ = 201002012311297 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 201002012312293 and 201002012312302.

It is not an unprimeable number, because it can be changed into a prime (201002012312341) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9136455105095 + ... + 9136455105116.

It is an arithmetic number, because the mean of its divisors is an integer number (54818730630636).

Almost surely, 2^{201002012312321} is an apocalyptic number.

It is an amenable number.

201002012312321 is a deficient number, since it is larger than the sum of its proper divisors (18272910210223).

201002012312321 is a wasteful number, since it uses less digits than its factorization.

201002012312321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18272910210222.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 201002012312321 its reverse (123213210200102), we get a palindrome (324215222512423).

It can be divided in two parts, 2010020 and 12312321, that added together give a palindrome (14322341).

The spelling of 201002012312321 in words is "two hundred one trillion, two billion, twelve million, three hundred twelve thousand, three hundred twenty-one".