102001001011001 has 4 divisors (see below), whose sum is σ = 102001097612004. Its totient is φ = 102000904410000.

The previous prime is 102001001010943. The next prime is 102001001011043. The reversal of 102001001011001 is 100110100100201.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 47530696851001 + 54470304160000 = 6894251^2 + 7380400^2 .

It is a cyclic number.

It is not a de Polignac number, because 102001001011001 - 2¹⁰ = 102001001009977 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 102001001011001.

It is not an unprimeable number, because it can be changed into a prime (102001001011061) 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, 46698950 + ... + 48834351.

It is an arithmetic number, because the mean of its divisors is an integer number (25500274403001).

Almost surely, 2^{102001001011001} is an apocalyptic number.

It is an amenable number.

102001001011001 is a deficient number, since it is larger than the sum of its proper divisors (96601003).

102001001011001 is an equidigital number, since it uses as much as digits as its factorization.

102001001011001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96601002.

The product of its (nonzero) digits is 2, while the sum is 8.

Adding to 102001001011001 its reverse (100110100100201), we get a palindrome (202111101111202).

The spelling of 102001001011001 in words is "one hundred two trillion, one billion, one million, eleven thousand, one".