201001203031321 has 96 divisors (see below), whose sum is σ = 281503865583360. Its totient is φ = 139611631104000.

The previous prime is 201001203031249. The next prime is 201001203031351. The reversal of 201001203031321 is 123130302100102.

It is not a de Polignac number, because 201001203031321 - 2¹⁵ = 201001202998553 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is not an unprimeable number, because it can be changed into a prime (201001203031351) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 946757701 + ... + 946969981.

It is an arithmetic number, because the mean of its divisors is an integer number (2932331933160).

Almost surely, 2^{201001203031321} is an apocalyptic number.

It is an amenable number.

201001203031321 is a deficient number, since it is larger than the sum of its proper divisors (80502662552039).

201001203031321 is a wasteful number, since it uses less digits than its factorization.

201001203031321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 215807 (or 215796 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 201001203031321 its reverse (123130302100102), we get a palindrome (324131505131423).

The spelling of 201001203031321 in words is "two hundred one trillion, one billion, two hundred three million, thirty-one thousand, three hundred twenty-one".