201321201210321 has 8 divisors (see below), whose sum is σ = 268429392935680. Its totient is φ = 134213571812592.

The previous prime is 201321201210313. The next prime is 201321201210323. The reversal of 201321201210321 is 123012102123102.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 201321201210321 - 2³ = 201321201210313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (201321201210323) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 139745830 + ... + 141179103.

It is an arithmetic number, because the mean of its divisors is an integer number (33553674116960).

Almost surely, 2^{201321201210321} is an apocalyptic number.

It is an amenable number.

201321201210321 is a deficient number, since it is larger than the sum of its proper divisors (67108191725359).

201321201210321 is a wasteful number, since it uses less digits than its factorization.

201321201210321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 281163815.

The product of its (nonzero) digits is 288, while the sum is 21.

Adding to 201321201210321 its reverse (123012102123102), we get a palindrome (324333303333423).

The spelling of 201321201210321 in words is "two hundred one trillion, three hundred twenty-one billion, two hundred one million, two hundred ten thousand, three hundred twenty-one".