1001001010990 has 16 divisors (see below), whose sum is σ = 1804770202752. Its totient is φ = 399740763744.

The previous prime is 1001001010943. The next prime is 1001001010991. The reversal of 1001001010990 is 990101001001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1001001010991) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 82448709 + ... + 82460848.

It is an arithmetic number, because the mean of its divisors is an integer number (112798137672).

Almost surely, 2^{1001001010990} is an apocalyptic number.

1001001010990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1001001010990 is a deficient number, since it is larger than the sum of its proper divisors (803769191762).

1001001010990 is a wasteful number, since it uses less digits than its factorization.

1001001010990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 164910171.

The product of its (nonzero) digits is 81, while the sum is 22.

Adding to 1001001010990 its reverse (990101001001), we get a palindrome (1991102011991).

The spelling of 1001001010990 in words is "one trillion, one billion, one million, ten thousand, nine hundred ninety".