201000123321 has 16 divisors (see below), whose sum is σ = 287428184640. Its totient is φ = 124552209600.

The previous prime is 201000123319. The next prime is 201000123323. The reversal of 201000123321 is 123321000102.

It is an interprime number because it is at equal distance from previous prime (201000123319) and next prime (201000123323).

It is not a de Polignac number, because 201000123321 - 2¹ = 201000123319 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 201000123321.

It is not an unprimeable number, because it can be changed into a prime (201000123323) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33264130 + ... + 33270171.

It is an arithmetic number, because the mean of its divisors is an integer number (17964261540).

Almost surely, 2^201000123321 is an apocalyptic number.

It is an amenable number.

201000123321 is a deficient number, since it is larger than the sum of its proper divisors (86428061319).

201000123321 is a wasteful number, since it uses less digits than its factorization.

201000123321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66534376.

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 201000123321 its reverse (123321000102), we get a palindrome (324321123423).

The spelling of 201000123321 in words is "two hundred one billion, one hundred twenty-three thousand, three hundred twenty-one".