12031213221101 has 4 divisors (see below), whose sum is σ = 12664434969600. Its totient is φ = 11397991472604.

The previous prime is 12031213221077. The next prime is 12031213221133. The reversal of 12031213221101 is 10112231213021.

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 12031213221101 - 2⁴² = 7633166709997 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12031213721101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 316610874221 + ... + 316610874258.

It is an arithmetic number, because the mean of its divisors is an integer number (3166108742400).

Almost surely, 2^{12031213221101} is an apocalyptic number.

It is an amenable number.

12031213221101 is a deficient number, since it is larger than the sum of its proper divisors (633221748499).

12031213221101 is an equidigital number, since it uses as much as digits as its factorization.

12031213221101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 633221748498.

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

Adding to 12031213221101 its reverse (10112231213021), we get a palindrome (22143444434122).

The spelling of 12031213221101 in words is "twelve trillion, thirty-one billion, two hundred thirteen million, two hundred twenty-one thousand, one hundred one".