12100211010221 has 2 divisors, whose sum is σ = 12100211010222. Its totient is φ = 12100211010220.

The previous prime is 12100211010179. The next prime is 12100211010227. The reversal of 12100211010221 is 12201011200121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11954755729225 + 145455280996 = 3457565^2 + 381386^2 .

It is a cyclic number.

It is not a de Polignac number, because 12100211010221 - 2⁶ = 12100211010157 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12100211010196 and 12100211010205.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12100211010227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6050105505110 + 6050105505111.

It is an arithmetic number, because the mean of its divisors is an integer number (6050105505111).

Almost surely, 2^{12100211010221} is an apocalyptic number.

It is an amenable number.

12100211010221 is a deficient number, since it is larger than the sum of its proper divisors (1).

12100211010221 is an equidigital number, since it uses as much as digits as its factorization.

12100211010221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 12100211010221 its reverse (12201011200121), we get a palindrome (24301222210342).

The spelling of 12100211010221 in words is "twelve trillion, one hundred billion, two hundred eleven million, ten thousand, two hundred twenty-one".