11000211021987 has 32 divisors (see below), whose sum is σ = 16564584913920. Its totient is φ = 6435564952320.

The previous prime is 11000211021907. The next prime is 11000211022033. The reversal of 11000211021987 is 78912011200011.

It is not a de Polignac number, because 11000211021987 - 2¹⁵ = 11000210989219 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (11000211021907) 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 31 ways as a sum of consecutive naturals, for example, 48464412 + ... + 48690857.

It is an arithmetic number, because the mean of its divisors is an integer number (517643278560).

Almost surely, 2^{11000211021987} is an apocalyptic number.

11000211021987 is a deficient number, since it is larger than the sum of its proper divisors (5564373891933).

11000211021987 is a wasteful number, since it uses less digits than its factorization.

11000211021987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97155403.

The product of its (nonzero) digits is 2016, while the sum is 33.

Adding to 11000211021987 its reverse (78912011200011), we get a palindrome (89912222221998).

The spelling of 11000211021987 in words is "eleven trillion, two hundred eleven million, twenty-one thousand, nine hundred eighty-seven".