11021021011 has 32 divisors (see below), whose sum is σ = 14914142208. Its totient is φ = 7864698240.

The previous prime is 11021020991. The next prime is 11021021027. The reversal of 11021021011 is 11012012011.

It is not a de Polignac number, because 11021021011 - 2⁵ = 11021020979 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11021021311) 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, 83781 + ... + 170473.

It is an arithmetic number, because the mean of its divisors is an integer number (466066944).

Almost surely, 2^11021021011 is an apocalyptic number.

11021021011 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

11021021011 is a deficient number, since it is larger than the sum of its proper divisors (3893121197).

11021021011 is a wasteful number, since it uses less digits than its factorization.

11021021011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86851.

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

Adding to 11021021011 its reverse (11012012011), we get a palindrome (22033033022).

The spelling of 11021021011 in words is "eleven billion, twenty-one million, twenty-one thousand, eleven".