201123131103101 has 4 divisors (see below), whose sum is σ = 201123161526204. Its totient is φ = 201123100680000.

The previous prime is 201123131103049. The next prime is 201123131103109. The reversal of 201123131103101 is 101301131321102.

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

It can be written as a sum of positive squares in 2 ways, for example, as 130376090515225 + 70747040587876 = 11418235^2 + 8411126^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-201123131103101 is a prime.

It is a super-3 number, since 3×201123131103101³ (a number of 44 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201123131103109) 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, 646700 + ... + 20066501.

It is an arithmetic number, because the mean of its divisors is an integer number (50280790381551).

Almost surely, 2^{201123131103101} is an apocalyptic number.

It is an amenable number.

201123131103101 is a deficient number, since it is larger than the sum of its proper divisors (30423103).

201123131103101 is an equidigital number, since it uses as much as digits as its factorization.

201123131103101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30423102.

The product of its (nonzero) digits is 108, while the sum is 20.

Adding to 201123131103101 its reverse (101301131321102), we get a palindrome (302424262424203).

The spelling of 201123131103101 in words is "two hundred one trillion, one hundred twenty-three billion, one hundred thirty-one million, one hundred three thousand, one hundred one".