12100233221 has 2 divisors, whose sum is σ = 12100233222. Its totient is φ = 12100233220.

The previous prime is 12100233203. The next prime is 12100233251. The reversal of 12100233221 is 12233200121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11715681121 + 384552100 = 108239^2 + 19610^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12100233221 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12100233221.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12100233251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6050116610 + 6050116611.

It is an arithmetic number, because the mean of its divisors is an integer number (6050116611).

Almost surely, 2^12100233221 is an apocalyptic number.

It is an amenable number.

12100233221 is a deficient number, since it is larger than the sum of its proper divisors (1).

12100233221 is an equidigital number, since it uses as much as digits as its factorization.

12100233221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 12100233221 its reverse (12233200121), we get a palindrome (24333433342).

The spelling of 12100233221 in words is "twelve billion, one hundred million, two hundred thirty-three thousand, two hundred twenty-one".