2001020021002 has 8 divisors (see below), whose sum is σ = 3001586443200. Its totient is φ = 1000491206604.

The previous prime is 2001020020997. The next prime is 2001020021023. The reversal of 2001020021002 is 2001200201002.

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

It is a super-2 number, since 2×2001020021002² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2001020021002.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9268552 + ... + 9481987.

It is an arithmetic number, because the mean of its divisors is an integer number (375198305400).

Almost surely, 2^{2001020021002} is an apocalyptic number.

2001020021002 is a deficient number, since it is larger than the sum of its proper divisors (1000566422198).

2001020021002 is a wasteful number, since it uses less digits than its factorization.

2001020021002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18803900.

The product of its (nonzero) digits is 16, while the sum is 10.

Adding to 2001020021002 its reverse (2001200201002), we get a palindrome (4002220222004).

The spelling of 2001020021002 in words is "two trillion, one billion, twenty million, twenty-one thousand, two".