1002001201969 has 2 divisors, whose sum is σ = 1002001201970. Its totient is φ = 1002001201968.

The previous prime is 1002001201961. The next prime is 1002001202131. The reversal of 1002001201969 is 9691021002001.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 667121400625 + 334879801344 = 816775^2 + 578688^2 .

It is a cyclic number.

It is not a de Polignac number, because 1002001201969 - 2³ = 1002001201961 is a prime.

It is a super-2 number, since 2×1002001201969² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1002001201969.

It is not a weakly prime, because it can be changed into another prime (1002001201961) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 501000600984 + 501000600985.

It is an arithmetic number, because the mean of its divisors is an integer number (501000600985).

Almost surely, 2^{1002001201969} is an apocalyptic number.

It is an amenable number.

1002001201969 is a deficient number, since it is larger than the sum of its proper divisors (1).

1002001201969 is an equidigital number, since it uses as much as digits as its factorization.

1002001201969 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1944, while the sum is 31.

The spelling of 1002001201969 in words is "one trillion, two billion, one million, two hundred one thousand, nine hundred sixty-nine".