1002202201993 has 2 divisors, whose sum is σ = 1002202201994. Its totient is φ = 1002202201992.

The previous prime is 1002202201961. The next prime is 1002202202039. The reversal of 1002202201993 is 3991022022001.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 934650033529 + 67552168464 = 966773^2 + 259908^2 .

It is a cyclic number.

It is not a de Polignac number, because 1002202201993 - 2⁵ = 1002202201961 is a prime.

It is not a weakly prime, because it can be changed into another prime (1002202201093) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 501101100996 + 501101100997.

It is an arithmetic number, because the mean of its divisors is an integer number (501101100997).

Almost surely, 2^{1002202201993} is an apocalyptic number.

It is an amenable number.

1002202201993 is a deficient number, since it is larger than the sum of its proper divisors (1).

1002202201993 is an equidigital number, since it uses as much as digits as its factorization.

1002202201993 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3888, while the sum is 31.

Adding to 1002202201993 its reverse (3991022022001), we get a palindrome (4993224223994).

The spelling of 1002202201993 in words is "one trillion, two billion, two hundred two million, two hundred one thousand, nine hundred ninety-three".