201013101002123 has 4 divisors (see below), whose sum is σ = 201014040384888. Its totient is φ = 201012161619360.

The previous prime is 201013101002033. The next prime is 201013101002173. The reversal of 201013101002123 is 321200101310102.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 201013101002123 - 2³⁶ = 200944381525387 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (201013101002173) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 469370333 + ... + 469798398.

It is an arithmetic number, because the mean of its divisors is an integer number (50253510096222).

Almost surely, 2^{201013101002123} is an apocalyptic number.

201013101002123 is a deficient number, since it is larger than the sum of its proper divisors (939382765).

201013101002123 is an equidigital number, since it uses as much as digits as its factorization.

201013101002123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 939382764.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 201013101002123 its reverse (321200101310102), we get a palindrome (522213202312225).

The spelling of 201013101002123 in words is "two hundred one trillion, thirteen billion, one hundred one million, two thousand, one hundred twenty-three".