1002121021001 has 8 divisors (see below), whose sum is σ = 1061102998944. Its totient is φ = 943142785600.

The previous prime is 1002121020991. The next prime is 1002121021039. The reversal of 1002121021001 is 1001201212001.

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 1002121021001 - 2¹⁴ = 1002121004617 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1002121021061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 374735 + ... + 1464468.

It is an arithmetic number, because the mean of its divisors is an integer number (132637874868).

Almost surely, 2^{1002121021001} is an apocalyptic number.

It is an amenable number.

1002121021001 is a deficient number, since it is larger than the sum of its proper divisors (58981977943).

1002121021001 is a wasteful number, since it uses less digits than its factorization.

1002121021001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1871271.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 1002121021001 its reverse (1001201212001), we get a palindrome (2003322233002).

The spelling of 1002121021001 in words is "one trillion, two billion, one hundred twenty-one million, twenty-one thousand, one".