201001320030123 has 16 divisors (see below), whose sum is σ = 297837320073600. Its totient is φ = 133974966007080.

The previous prime is 201001320030113. The next prime is 201001320030139. The reversal of 201001320030123 is 321030023100102.

201001320030123 is a `hidden beast` number, since 20 + 1 + 0 + 0 + 1 + 320 + 0 + 301 + 23 = 666.

It is not a de Polignac number, because 201001320030123 - 2¹⁸ = 201001319767979 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 201001320030096 and 201001320030105.

It is not an unprimeable number, because it can be changed into a prime (201001320030113) 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, 719691493 + ... + 719970726.

It is an arithmetic number, because the mean of its divisors is an integer number (18614832504600).

Almost surely, 2^{201001320030123} is an apocalyptic number.

201001320030123 is a deficient number, since it is larger than the sum of its proper divisors (96836000043477).

201001320030123 is a wasteful number, since it uses less digits than its factorization.

201001320030123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1439667399 (or 1439667393 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 201001320030123 its reverse (321030023100102), we get a palindrome (522031343130225).

The spelling of 201001320030123 in words is "two hundred one trillion, one billion, three hundred twenty million, thirty thousand, one hundred twenty-three".