123551100213 has 16 divisors (see below), whose sum is σ = 165667352256. Its totient is φ = 81901532160.

The previous prime is 123551100199. The next prime is 123551100217. The reversal of 123551100213 is 312001155321.

It is not a de Polignac number, because 123551100213 - 2⁸ = 123551099957 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123551100217) 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 15 ways as a sum of consecutive naturals, for example, 1189806 + ... + 1289472.

It is an arithmetic number, because the mean of its divisors is an integer number (10354209516).

Almost surely, 2^123551100213 is an apocalyptic number.

It is an amenable number.

123551100213 is a deficient number, since it is larger than the sum of its proper divisors (42116252043).

123551100213 is a wasteful number, since it uses less digits than its factorization.

123551100213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102004.

The product of its (nonzero) digits is 900, while the sum is 24.

Adding to 123551100213 its reverse (312001155321), we get a palindrome (435552255534).

The spelling of 123551100213 in words is "one hundred twenty-three billion, five hundred fifty-one million, one hundred thousand, two hundred thirteen".