12210312111121 has 4 divisors (see below), whose sum is σ = 12364873024000. Its totient is φ = 12055751198244.

The previous prime is 12210312111043. The next prime is 12210312111139. The reversal of 12210312111121 is 12111121301221.

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 12210312111121 - 2³⁹ = 11660556297233 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12210312111521) 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, 77280456321 + ... + 77280456478.

It is an arithmetic number, because the mean of its divisors is an integer number (3091218256000).

Almost surely, 2^{12210312111121} is an apocalyptic number.

It is an amenable number.

12210312111121 is a deficient number, since it is larger than the sum of its proper divisors (154560912879).

12210312111121 is an equidigital number, since it uses as much as digits as its factorization.

12210312111121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 154560912878.

The product of its (nonzero) digits is 48, while the sum is 19.

Adding to 12210312111121 its reverse (12111121301221), we get a palindrome (24321433412342).

The spelling of 12210312111121 in words is "twelve trillion, two hundred ten billion, three hundred twelve million, one hundred eleven thousand, one hundred twenty-one".