12211011121 has 8 divisors (see below), whose sum is σ = 13181302080. Its totient is φ = 11277334992.

The previous prime is 12211011103. The next prime is 12211011149. The reversal of 12211011121 is 12111011221.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12211011121 - 2⁵ = 12211011089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12211011101) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9153015 + ... + 9154348.

It is an arithmetic number, because the mean of its divisors is an integer number (1647662760).

Almost surely, 2^12211011121 is an apocalyptic number.

It is an amenable number.

12211011121 is a deficient number, since it is larger than the sum of its proper divisors (970290959).

12211011121 is a wasteful number, since it uses less digits than its factorization.

12211011121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18307415.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 12211011121 its reverse (12111011221), we get a palindrome (24322022342).

The spelling of 12211011121 in words is "twelve billion, two hundred eleven million, eleven thousand, one hundred twenty-one".