5123201233121 has 4 divisors (see below), whose sum is σ = 5207188138644. Its totient is φ = 5039214327600.

The previous prime is 5123201233109. The next prime is 5123201233127. The reversal of 5123201233121 is 1213321023215.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1050493804096 + 4072707429025 = 1024936^2 + 2018095^2 .

It is a cyclic number.

It is not a de Polignac number, because 5123201233121 - 2²⁶ = 5123134124257 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5123201233127) 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, 41993452670 + ... + 41993452791.

It is an arithmetic number, because the mean of its divisors is an integer number (1301797034661).

Almost surely, 2^{5123201233121} is an apocalyptic number.

It is an amenable number.

5123201233121 is a deficient number, since it is larger than the sum of its proper divisors (83986905523).

5123201233121 is an equidigital number, since it uses as much as digits as its factorization.

5123201233121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83986905522.

The product of its (nonzero) digits is 2160, while the sum is 26.

Adding to 5123201233121 its reverse (1213321023215), we get a palindrome (6336522256336).

The spelling of 5123201233121 in words is "five trillion, one hundred twenty-three billion, two hundred one million, two hundred thirty-three thousand, one hundred twenty-one".