12210311121 has 4 divisors (see below), whose sum is σ = 16280414832. Its totient is φ = 8140207412.

The previous prime is 12210311111. The next prime is 12210311129. The reversal of 12210311121 is 12111301221.

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 12210311121 - 2¹⁴ = 12210294737 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 12210311121.

It is not an unprimeable number, because it can be changed into a prime (12210311129) 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, 2035051851 + ... + 2035051856.

It is an arithmetic number, because the mean of its divisors is an integer number (4070103708).

Almost surely, 2^12210311121 is an apocalyptic number.

It is an amenable number.

12210311121 is a deficient number, since it is larger than the sum of its proper divisors (4070103711).

12210311121 is an equidigital number, since it uses as much as digits as its factorization.

12210311121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4070103710.

The product of its (nonzero) digits is 24, while the sum is 15.

Adding to 12210311121 its reverse (12111301221), we get a palindrome (24321612342).

The spelling of 12210311121 in words is "twelve billion, two hundred ten million, three hundred eleven thousand, one hundred twenty-one".