124040210101 has 2 divisors, whose sum is σ = 124040210102. Its totient is φ = 124040210100.

The previous prime is 124040210089. The next prime is 124040210149. The reversal of 124040210101 is 101012040421.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 123865283025 + 174927076 = 351945^2 + 13226^2 .

It is an emirp because it is prime and its reverse (101012040421) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-124040210101 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (124040210501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62020105050 + 62020105051.

It is an arithmetic number, because the mean of its divisors is an integer number (62020105051).

Almost surely, 2^124040210101 is an apocalyptic number.

It is an amenable number.

124040210101 is a deficient number, since it is larger than the sum of its proper divisors (1).

124040210101 is an equidigital number, since it uses as much as digits as its factorization.

124040210101 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 124040210101 its reverse (101012040421), we get a palindrome (225052250522).

The spelling of 124040210101 in words is "one hundred twenty-four billion, forty million, two hundred ten thousand, one hundred one".