1002002220061 has 2 divisors, whose sum is σ = 1002002220062. Its totient is φ = 1002002220060.

The previous prime is 1002002220007. The next prime is 1002002220067. The reversal of 1002002220061 is 1600222002001.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 736153704036 + 265848516025 = 857994^2 + 515605^2 .

It is a cyclic number.

It is not a de Polignac number, because 1002002220061 - 2⁹ = 1002002219549 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1002002220067) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 501001110030 + 501001110031.

It is an arithmetic number, because the mean of its divisors is an integer number (501001110031).

Almost surely, 2^{1002002220061} is an apocalyptic number.

It is an amenable number.

1002002220061 is a deficient number, since it is larger than the sum of its proper divisors (1).

1002002220061 is an equidigital number, since it uses as much as digits as its factorization.

1002002220061 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 1002002220061 its reverse (1600222002001), we get a palindrome (2602224222062).

The spelling of 1002002220061 in words is "one trillion, two billion, two million, two hundred twenty thousand, sixty-one".