20112011220011 has 4 divisors (see below), whose sum is σ = 20169970906872. Its totient is φ = 20054051533152.

The previous prime is 20112011219977. The next prime is 20112011220101. The reversal of 20112011220011 is 11002211021102.

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

It is a cyclic number.

It is not a de Polignac number, because 20112011220011 - 2³⁰ = 20110937478187 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20112011220311) 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, 28979842910 + ... + 28979843603.

It is an arithmetic number, because the mean of its divisors is an integer number (5042492726718).

Almost surely, 2^{20112011220011} is an apocalyptic number.

20112011220011 is a deficient number, since it is larger than the sum of its proper divisors (57959686861).

20112011220011 is an equidigital number, since it uses as much as digits as its factorization.

20112011220011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57959686860.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 20112011220011 its reverse (11002211021102), we get a palindrome (31114222241113).

The spelling of 20112011220011 in words is "twenty trillion, one hundred twelve billion, eleven million, two hundred twenty thousand, eleven".