123130010001021 has 16 divisors (see below), whose sum is σ = 172862880729600. Its totient is φ = 77744347883568.

The previous prime is 123130010001001. The next prime is 123130010001079. The reversal of 123130010001021 is 120100010031321.

It is a happy number.

It is not a de Polignac number, because 123130010001021 - 2⁶ = 123130010000957 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123130010001001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 304994041 + ... + 305397486.

It is an arithmetic number, because the mean of its divisors is an integer number (10803930045600).

Almost surely, 2^{123130010001021} is an apocalyptic number.

It is an amenable number.

123130010001021 is a deficient number, since it is larger than the sum of its proper divisors (49732870728579).

123130010001021 is a wasteful number, since it uses less digits than its factorization.

123130010001021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 610395088.

The product of its (nonzero) digits is 36, while the sum is 15.

Adding to 123130010001021 its reverse (120100010031321), we get a palindrome (243230020032342).

The spelling of 123130010001021 in words is "one hundred twenty-three trillion, one hundred thirty billion, ten million, one thousand, twenty-one".