123210100201 has 4 divisors (see below), whose sum is σ = 130457753172. Its totient is φ = 115962447232.

The previous prime is 123210100187. The next prime is 123210100213. The reversal of 123210100201 is 102001012321.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 102001012321 = 13 ⋅7846231717.

It can be written as a sum of positive squares in 2 ways, for example, as 92599098601 + 30611001600 = 304301^2 + 174960^2 .

It is a cyclic number.

It is not a de Polignac number, because 123210100201 - 2⁷ = 123210100073 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123210100241) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3623826460 + ... + 3623826493.

It is an arithmetic number, because the mean of its divisors is an integer number (32614438293).

Almost surely, 2^123210100201 is an apocalyptic number.

It is an amenable number.

123210100201 is a deficient number, since it is larger than the sum of its proper divisors (7247652971).

123210100201 is an equidigital number, since it uses as much as digits as its factorization.

123210100201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7247652970.

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 123210100201 its reverse (102001012321), we get a palindrome (225211112522).

The spelling of 123210100201 in words is "one hundred twenty-three billion, two hundred ten million, one hundred thousand, two hundred one".