1021002012001 has 8 divisors (see below), whose sum is σ = 1054875689280. Its totient is φ = 987458809968.

The previous prime is 1021002011993. The next prime is 1021002012029. The reversal of 1021002012001 is 1002102001201.

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 1021002012001 - 2³ = 1021002011993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1021002012031) 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, 82612531 + ... + 82624888.

It is an arithmetic number, because the mean of its divisors is an integer number (131859461160).

Almost surely, 2^{1021002012001} is an apocalyptic number.

It is an amenable number.

1021002012001 is a deficient number, since it is larger than the sum of its proper divisors (33873677279).

1021002012001 is a wasteful number, since it uses less digits than its factorization.

1021002012001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 165237623.

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

Adding to 1021002012001 its reverse (1002102001201), we get a palindrome (2023104013202).

The spelling of 1021002012001 in words is "one trillion, twenty-one billion, two million, twelve thousand, one".