20111112220011 has 4 divisors (see below), whose sum is σ = 26814816293352. Its totient is φ = 13407408146672.

The previous prime is 20111112219893. The next prime is 20111112220019. The reversal of 20111112220011 is 11002221111102.

It is a happy number.

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 20111112220011 - 2³⁴ = 20093932350827 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20111112220019) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3351852036666 + ... + 3351852036671.

It is an arithmetic number, because the mean of its divisors is an integer number (6703704073338).

Almost surely, 2^{20111112220011} is an apocalyptic number.

20111112220011 is a deficient number, since it is larger than the sum of its proper divisors (6703704073341).

20111112220011 is an equidigital number, since it uses as much as digits as its factorization.

20111112220011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6703704073340.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 20111112220011 its reverse (11002221111102), we get a palindrome (31113333331113).

The spelling of 20111112220011 in words is "twenty trillion, one hundred eleven billion, one hundred twelve million, two hundred twenty thousand, eleven".