201321201210 has 32 divisors (see below), whose sum is σ = 483635992320. Its totient is φ = 53633974848.

The previous prime is 201321201143. The next prime is 201321201229. The reversal of 201321201210 is 12102123102.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 201321201210.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3198237 + ... + 3260576.

It is an arithmetic number, because the mean of its divisors is an integer number (15113624760).

Almost surely, 2^201321201210 is an apocalyptic number.

201321201210 is an abundant number, since it is smaller than the sum of its proper divisors (282314791110).

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

201321201210 is a wasteful number, since it uses less digits than its factorization.

201321201210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6459862.

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 201321201210 its reverse (12102123102), we get a palindrome (213423324312).

The spelling of 201321201210 in words is "two hundred one billion, three hundred twenty-one million, two hundred one thousand, two hundred ten".