123112020201 has 4 divisors (see below), whose sum is σ = 164149360272. Its totient is φ = 82074680132.

The previous prime is 123112020173. The next prime is 123112020203. The reversal of 123112020201 is 102020211321.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 123112020201 - 2¹⁵ = 123111987433 is a prime.

It is not an unprimeable number, because it can be changed into a prime (123112020203) 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 3 ways as a sum of consecutive naturals, for example, 20518670031 + ... + 20518670036.

It is an arithmetic number, because the mean of its divisors is an integer number (41037340068).

Almost surely, 2^123112020201 is an apocalyptic number.

It is an amenable number.

123112020201 is a deficient number, since it is larger than the sum of its proper divisors (41037340071).

123112020201 is an equidigital number, since it uses as much as digits as its factorization.

123112020201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41037340070.

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 123112020201 its reverse (102020211321), we get a palindrome (225132231522).

The spelling of 123112020201 in words is "one hundred twenty-three billion, one hundred twelve million, twenty thousand, two hundred one".