1001011121002 has 8 divisors (see below), whose sum is σ = 1501638783012. Its totient is φ = 500464860000.

The previous prime is 1001011120981. The next prime is 1001011121021. The reversal of 1001011121002 is 2001211101001.

It can be written as a sum of positive squares in 2 ways, for example, as 1000918210681 + 92910321 = 1000459^2 + 9639^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 1001011121002.

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, 20319499 + ... + 20368702.

Almost surely, 2^{1001011121002} is an apocalyptic number.

1001011121002 is a deficient number, since it is larger than the sum of its proper divisors (500627662010).

1001011121002 is a wasteful number, since it uses less digits than its factorization.

1001011121002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40700504.

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 1001011121002 its reverse (2001211101001), we get a palindrome (3002222222003).

The spelling of 1001011121002 in words is "one trillion, one billion, eleven million, one hundred twenty-one thousand, two".