123130213201 has 4 divisors (see below), whose sum is σ = 123810490804. Its totient is φ = 122449935600.

The previous prime is 123130213187. The next prime is 123130213231. The reversal of 123130213201 is 102312031321.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 102312031321 = 419 ⋅244181459.

It can be written as a sum of positive squares in 2 ways, for example, as 24719386176 + 98410827025 = 157224^2 + 313705^2 .

It is a cyclic number.

It is not a de Polignac number, because 123130213201 - 2²³ = 123121824593 is a prime.

It is a super-2 number, since 2×123130213201² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123130213231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 340138530 + ... + 340138891.

It is an arithmetic number, because the mean of its divisors is an integer number (30952622701).

Almost surely, 2^123130213201 is an apocalyptic number.

It is an amenable number.

123130213201 is a deficient number, since it is larger than the sum of its proper divisors (680277603).

123130213201 is an equidigital number, since it uses as much as digits as its factorization.

123130213201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 680277602.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 123130213201 its reverse (102312031321), we get a palindrome (225442244522).

The spelling of 123130213201 in words is "one hundred twenty-three billion, one hundred thirty million, two hundred thirteen thousand, two hundred one".