1001120202001 has 4 divisors (see below), whose sum is σ = 1002130415104. Its totient is φ = 1000109988900.

The previous prime is 1001120201903. The next prime is 1001120202007. The reversal of 1001120202001 is 1002020211001.

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 a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1001120202001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1001120202007) 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, 505105065 + ... + 505107046.

It is an arithmetic number, because the mean of its divisors is an integer number (250532603776).

Almost surely, 2^{1001120202001} is an apocalyptic number.

It is an amenable number.

1001120202001 is a deficient number, since it is larger than the sum of its proper divisors (1010213103).

1001120202001 is an equidigital number, since it uses as much as digits as its factorization.

1001120202001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1010213102.

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 1001120202001 its reverse (1002020211001), we get a palindrome (2003140413002).

The spelling of 1001120202001 in words is "one trillion, one billion, one hundred twenty million, two hundred two thousand, one".