2010002001221 has 2 divisors, whose sum is σ = 2010002001222. Its totient is φ = 2010002001220.

The previous prime is 2010002001187. The next prime is 2010002001239. The reversal of 2010002001221 is 1221002000102.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1464368632321 + 545633368900 = 1210111^2 + 738670^2 .

It is a cyclic number.

It is not a de Polignac number, because 2010002001221 - 2¹⁰ = 2010002000197 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2010002001521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1005001000610 + 1005001000611.

It is an arithmetic number, because the mean of its divisors is an integer number (1005001000611).

Almost surely, 2^{2010002001221} is an apocalyptic number.

It is an amenable number.

2010002001221 is a deficient number, since it is larger than the sum of its proper divisors (1).

2010002001221 is an equidigital number, since it uses as much as digits as its factorization.

2010002001221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 2010002001221 its reverse (1221002000102), we get a palindrome (3231004001323).

The spelling of 2010002001221 in words is "two trillion, ten billion, two million, one thousand, two hundred twenty-one".