1002000211001 has 4 divisors (see below), whose sum is σ = 1002002505600. Its totient is φ = 1001997916404.

The previous prime is 1002000210989. The next prime is 1002000211013. The reversal of 1002000211001 is 1001120002001.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (1002000210989) and next prime (1002000211013).

It is a cyclic number.

It is not a de Polignac number, because 1002000211001 - 2³⁸ = 727122304057 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1002000211001.

It is not an unprimeable number, because it can be changed into a prime (1002000211061) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 267281 + ... + 1440638.

It is an arithmetic number, because the mean of its divisors is an integer number (250500626400).

Almost surely, 2^{1002000211001} is an apocalyptic number.

It is an amenable number.

1002000211001 is a deficient number, since it is larger than the sum of its proper divisors (2294599).

1002000211001 is an equidigital number, since it uses as much as digits as its factorization.

1002000211001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2294598.

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

Adding to 1002000211001 its reverse (1001120002001), we get a palindrome (2003120213002).

The spelling of 1002000211001 in words is "one trillion, two billion, two hundred eleven thousand, one".