12020220200221 has 2 divisors, whose sum is σ = 12020220200222. Its totient is φ = 12020220200220.

The previous prime is 12020220200201. The next prime is 12020220200237. The reversal of 12020220200221 is 12200202202021.

It is an a-pointer prime, because the next prime (12020220200237) can be obtained adding 12020220200221 to its sum of digits (16).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6900472265625 + 5119747934596 = 2626875^2 + 2262686^2 .

It is a cyclic number.

It is not a de Polignac number, because 12020220200221 - 2⁹ = 12020220199709 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12020220200195 and 12020220200204.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12020220200201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6010110100110 + 6010110100111.

It is an arithmetic number, because the mean of its divisors is an integer number (6010110100111).

Almost surely, 2^{12020220200221} is an apocalyptic number.

It is an amenable number.

12020220200221 is a deficient number, since it is larger than the sum of its proper divisors (1).

12020220200221 is an equidigital number, since it uses as much as digits as its factorization.

12020220200221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 12020220200221 its reverse (12200202202021), we get a palindrome (24220422402242).

The spelling of 12020220200221 in words is "twelve trillion, twenty billion, two hundred twenty million, two hundred thousand, two hundred twenty-one".