2001011021002 has 64 divisors (see below), whose sum is σ = 3686791956480. Its totient is φ = 795818523456.

The previous prime is 2001011020993. The next prime is 2001011021017. The reversal of 2001011021002 is 2001201101002.

It is a super-3 number, since 3×2001011021002³ (a number of 38 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2001011021002.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3892149 + ... + 4376167.

It is an arithmetic number, because the mean of its divisors is an integer number (57606124320).

Almost surely, 2^{2001011021002} is an apocalyptic number.

2001011021002 is a deficient number, since it is larger than the sum of its proper divisors (1685780935478).

2001011021002 is a wasteful number, since it uses less digits than its factorization.

2001011021002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 484435.

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

Adding to 2001011021002 its reverse (2001201101002), we get a palindrome (4002212122004).

The spelling of 2001011021002 in words is "two trillion, one billion, eleven million, twenty-one thousand, two".