1002002100101 has 2 divisors, whose sum is σ = 1002002100102. Its totient is φ = 1002002100100.

The previous prime is 1002002100091. The next prime is 1002002100161. The reversal of 1002002100101 is 1010012002001.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 596526067201 + 405476032900 = 772351^2 + 636770^2 .

It is a cyclic number.

It is not a de Polignac number, because 1002002100101 - 2¹⁴ = 1002002083717 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1002002100161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 501001050050 + 501001050051.

It is an arithmetic number, because the mean of its divisors is an integer number (501001050051).

Almost surely, 2^{1002002100101} is an apocalyptic number.

It is an amenable number.

1002002100101 is a deficient number, since it is larger than the sum of its proper divisors (1).

1002002100101 is an equidigital number, since it uses as much as digits as its factorization.

1002002100101 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4, while the sum is 8.

Adding to 1002002100101 its reverse (1010012002001), we get a palindrome (2012014102102).

The spelling of 1002002100101 in words is "one trillion, two billion, two million, one hundred thousand, one hundred one".