11020120021011 has 4 divisors (see below), whose sum is σ = 14693493361352. Its totient is φ = 7346746680672.

The previous prime is 11020120020961. The next prime is 11020120021019. The reversal of 11020120021011 is 11012002102011.

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

It is not a de Polignac number, because 11020120021011 - 2⁷ = 11020120020883 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11020120021019) 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 3 ways as a sum of consecutive naturals, for example, 1836686670166 + ... + 1836686670171.

It is an arithmetic number, because the mean of its divisors is an integer number (3673373340338).

Almost surely, 2^{11020120021011} is an apocalyptic number.

11020120021011 is a deficient number, since it is larger than the sum of its proper divisors (3673373340341).

11020120021011 is an equidigital number, since it uses as much as digits as its factorization.

11020120021011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3673373340340.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 11020120021011 its reverse (11012002102011), we get a palindrome (22032122123022).

The spelling of 11020120021011 in words is "eleven trillion, twenty billion, one hundred twenty million, twenty-one thousand, eleven".