1002002112109 has 2 divisors, whose sum is σ = 1002002112110. Its totient is φ = 1002002112108.

The previous prime is 1002002112061. The next prime is 1002002112119. The reversal of 1002002112109 is 9012112002001.

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., 658658850084 + 343343262025 = 811578^2 + 585955^2 .

It is a cyclic number.

It is not a de Polignac number, because 1002002112109 - 2¹¹ = 1002002110061 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1002002112119) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 501001056054 + 501001056055.

It is an arithmetic number, because the mean of its divisors is an integer number (501001056055).

Almost surely, 2^{1002002112109} is an apocalyptic number.

It is an amenable number.

1002002112109 is a deficient number, since it is larger than the sum of its proper divisors (1).

1002002112109 is an equidigital number, since it uses as much as digits as its factorization.

1002002112109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72, while the sum is 19.

It can be divided in two parts, 1002002 and 112109, that added together give a palindrome (1114111).

The spelling of 1002002112109 in words is "one trillion, two billion, two million, one hundred twelve thousand, one hundred nine".