2012010120221 has 2 divisors, whose sum is σ = 2012010120222. Its totient is φ = 2012010120220.

The previous prime is 2012010120203. The next prime is 2012010120223. The reversal of 2012010120221 is 1220210102102.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1324455722500 + 687554397721 = 1150850^2 + 829189^2 .

It is a cyclic number.

It is not a de Polignac number, because 2012010120221 - 2³⁸ = 1737132213277 is a prime.

Together with 2012010120223, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 2012010120196 and 2012010120205.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2012010120223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1006005060110 + 1006005060111.

It is an arithmetic number, because the mean of its divisors is an integer number (1006005060111).

Almost surely, 2^{2012010120221} is an apocalyptic number.

It is an amenable number.

2012010120221 is a deficient number, since it is larger than the sum of its proper divisors (1).

2012010120221 is an equidigital number, since it uses as much as digits as its factorization.

2012010120221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 2012010120221 its reverse (1220210102102), we get a palindrome (3232220222323).

The spelling of 2012010120221 in words is "two trillion, twelve billion, ten million, one hundred twenty thousand, two hundred twenty-one".