12123132211101 has 4 divisors (see below), whose sum is σ = 16164176281472. Its totient is φ = 8082088140732.

The previous prime is 12123132211051. The next prime is 12123132211129. The reversal of 12123132211101 is 10111223132121.

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 not a de Polignac number, because 12123132211101 - 2¹¹ = 12123132209053 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12123132211901) 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, 2020522035181 + ... + 2020522035186.

It is an arithmetic number, because the mean of its divisors is an integer number (4041044070368).

Almost surely, 2^{12123132211101} is an apocalyptic number.

It is an amenable number.

12123132211101 is a deficient number, since it is larger than the sum of its proper divisors (4041044070371).

12123132211101 is an equidigital number, since it uses as much as digits as its factorization.

12123132211101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4041044070370.

The product of its (nonzero) digits is 144, while the sum is 21.

Adding to 12123132211101 its reverse (10111223132121), we get a palindrome (22234355343222).

The spelling of 12123132211101 in words is "twelve trillion, one hundred twenty-three billion, one hundred thirty-two million, two hundred eleven thousand, one hundred one".