1202002001001 has 12 divisors (see below), whose sum is σ = 1776602441328. Its totient is φ = 782698977144.

The previous prime is 1202002000999. The next prime is 1202002001017. The reversal of 1202002001001 is 1001002002021.

It is not a de Polignac number, because 1202002001001 - 2¹ = 1202002000999 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is not an unprimeable number, because it can be changed into a prime (1202002001701) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1552973775 + ... + 1552974548.

It is an arithmetic number, because the mean of its divisors is an integer number (148050203444).

Almost surely, 2^{1202002001001} is an apocalyptic number.

It is an amenable number.

1202002001001 is a deficient number, since it is larger than the sum of its proper divisors (574600440327).

1202002001001 is a wasteful number, since it uses less digits than its factorization.

1202002001001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3105948372 (or 3105948369 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

Adding to 1202002001001 its reverse (1001002002021), we get a palindrome (2203004003022).

The spelling of 1202002001001 in words is "one trillion, two hundred two billion, two million, one thousand, one".