1021001010001 has 8 divisors (see below), whose sum is σ = 1173845473920. Its totient is φ = 869903340288.

The previous prime is 1021001009999. The next prime is 1021001010037. The reversal of 1021001010001 is 1000101001201.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1021001010001 - 2¹ = 1021001009999 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (7).

It is not an unprimeable number, because it can be changed into a prime (1021001020001) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 436697296 + ... + 436699633.

It is an arithmetic number, because the mean of its divisors is an integer number (146730684240).

Almost surely, 2^{1021001010001} is an apocalyptic number.

It is an amenable number.

1021001010001 is a deficient number, since it is larger than the sum of its proper divisors (152844463919).

1021001010001 is an equidigital number, since it uses as much as digits as its factorization.

1021001010001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 873397103.

The product of its (nonzero) digits is 2, while the sum is 7.

Adding to 1021001010001 its reverse (1000101001201), we get a palindrome (2021102011202).

The spelling of 1021001010001 in words is "one trillion, twenty-one billion, one million, ten thousand, one".