123001131101 has 4 divisors (see below), whose sum is σ = 130236491772. Its totient is φ = 115765770432.

The previous prime is 123001131089. The next prime is 123001131119. The reversal of 123001131101 is 101131100321.

It is a happy number.

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 72151332100 + 50849799001 = 268610^2 + 225499^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-123001131101 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123001131161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3617680310 + ... + 3617680343.

It is an arithmetic number, because the mean of its divisors is an integer number (32559122943).

Almost surely, 2^123001131101 is an apocalyptic number.

It is an amenable number.

123001131101 is a deficient number, since it is larger than the sum of its proper divisors (7235360671).

123001131101 is an equidigital number, since it uses as much as digits as its factorization.

123001131101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7235360670.

The product of its (nonzero) digits is 18, while the sum is 14.

Adding to 123001131101 its reverse (101131100321), we get a palindrome (224132231422).

The spelling of 123001131101 in words is "one hundred twenty-three billion, one million, one hundred thirty-one thousand, one hundred one".