1001021001002 has 32 divisors (see below), whose sum is σ = 1651332925440. Its totient is φ = 451317242880.

The previous prime is 1001021000951. The next prime is 1001021001011. The reversal of 1001021001002 is 2001001201001.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12076274 + ... + 12158882.

It is an arithmetic number, because the mean of its divisors is an integer number (51604153920).

Almost surely, 2^{1001021001002} is an apocalyptic number.

1001021001002 is a deficient number, since it is larger than the sum of its proper divisors (650311924438).

1001021001002 is a wasteful number, since it uses less digits than its factorization.

1001021001002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87086.

The product of its (nonzero) digits is 4, while the sum is 8.

Adding to 1001021001002 its reverse (2001001201001), we get a palindrome (3002022202003).

It can be divided in two parts, 10010 and 21001002, that added together give a palindrome (21011012).

The spelling of 1001021001002 in words is "one trillion, one billion, twenty-one million, one thousand, two".