201040124321 has 2 divisors, whose sum is σ = 201040124322. Its totient is φ = 201040124320.

The previous prime is 201040124309. The next prime is 201040124413. The reversal of 201040124321 is 123421040102.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 187219770721 + 13820353600 = 432689^2 + 117560^2 .

It is a cyclic number.

It is not a de Polignac number, because 201040124321 - 2¹⁴ = 201040107937 is a prime.

It is a super-2 number, since 2×201040124321² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 201040124293 and 201040124302.

It is not a weakly prime, because it can be changed into another prime (201040924321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100520062160 + 100520062161.

It is an arithmetic number, because the mean of its divisors is an integer number (100520062161).

Almost surely, 2^201040124321 is an apocalyptic number.

It is an amenable number.

201040124321 is a deficient number, since it is larger than the sum of its proper divisors (1).

201040124321 is an equidigital number, since it uses as much as digits as its factorization.

201040124321 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 201040124321 its reverse (123421040102), we get a palindrome (324461164423).

The spelling of 201040124321 in words is "two hundred one billion, forty million, one hundred twenty-four thousand, three hundred twenty-one".