12101230311221 has 4 divisors (see below), whose sum is σ = 12137789919744. Its totient is φ = 12064670702700.

The previous prime is 12101230311217. The next prime is 12101230311241. The reversal of 12101230311221 is 12211303210121.

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 12101230311221 - 2² = 12101230311217 is a prime.

It is a super-3 number, since 3×12101230311221³ (a number of 40 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12101230311193 and 12101230311202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12101230311241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18279803765 + ... + 18279804426.

It is an arithmetic number, because the mean of its divisors is an integer number (3034447479936).

Almost surely, 2^{12101230311221} is an apocalyptic number.

It is an amenable number.

12101230311221 is a deficient number, since it is larger than the sum of its proper divisors (36559608523).

12101230311221 is an equidigital number, since it uses as much as digits as its factorization.

12101230311221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36559608522.

The product of its (nonzero) digits is 144, while the sum is 20.

Adding to 12101230311221 its reverse (12211303210121), we get a palindrome (24312533521342).

The spelling of 12101230311221 in words is "twelve trillion, one hundred one billion, two hundred thirty million, three hundred eleven thousand, two hundred twenty-one".