12122111201 has 4 divisors (see below), whose sum is σ = 12132464304. Its totient is φ = 12111758100.

The previous prime is 12122111179. The next prime is 12122111219. The reversal of 12122111201 is 10211122121.

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, and also an emirpimes, since its reverse is a distinct semiprime: 10211122121 = 6857 ⋅1489153.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12122111201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12122111101) 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, 5174795 + ... + 5177136.

It is an arithmetic number, because the mean of its divisors is an integer number (3033116076).

Almost surely, 2^12122111201 is an apocalyptic number.

It is an amenable number.

12122111201 is a deficient number, since it is larger than the sum of its proper divisors (10353103).

12122111201 is a wasteful number, since it uses less digits than its factorization.

12122111201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10353102.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 12122111201 its reverse (10211122121), we get a palindrome (22333233322).

The spelling of 12122111201 in words is "twelve billion, one hundred twenty-two million, one hundred eleven thousand, two hundred one".