1001911001002 has 4 divisors (see below), whose sum is σ = 1502866501506. Its totient is φ = 500955500500.

The previous prime is 1001911000969. The next prime is 1001911001017. The reversal of 1001911001002 is 2001001191001.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 857344513041 + 144566487961 = 925929^2 + 380219^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 250477750249 + ... + 250477750252.

Almost surely, 2^{1001911001002} is an apocalyptic number.

1001911001002 is a deficient number, since it is larger than the sum of its proper divisors (500955500504).

1001911001002 is an equidigital number, since it uses as much as digits as its factorization.

1001911001002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 500955500503.

The product of its (nonzero) digits is 18, while the sum is 16.

Adding to 1001911001002 its reverse (2001001191001), we get a palindrome (3002912192003).

The spelling of 1001911001002 in words is "one trillion, one billion, nine hundred eleven million, one thousand, two".