1021002102001 has 8 divisors (see below), whose sum is σ = 1178188279424. Its totient is φ = 866648108160.

The previous prime is 1021002101983. The next prime is 1021002102031. The reversal of 1021002102001 is 1002012001201.

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 1021002102001 - 2⁵ = 1021002101969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1021002102031) 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, 708045120 + ... + 708046561.

It is an arithmetic number, because the mean of its divisors is an integer number (147273534928).

Almost surely, 2^{1021002102001} is an apocalyptic number.

It is an amenable number.

1021002102001 is a deficient number, since it is larger than the sum of its proper divisors (157186177423).

1021002102001 is a wasteful number, since it uses less digits than its factorization.

1021002102001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1416091791.

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

Adding to 1021002102001 its reverse (1002012001201), we get a palindrome (2023014103202).

The spelling of 1021002102001 in words is "one trillion, twenty-one billion, two million, one hundred two thousand, one".