20111112121333 has 4 divisors (see below), whose sum is σ = 20135607995628. Its totient is φ = 20086616247040.

The previous prime is 20111112121297. The next prime is 20111112121381. The reversal of 20111112121333 is 33312121111102.

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

It can be written as a sum of positive squares in 2 ways, for example, as 6571670679729 + 13539441441604 = 2563527^2 + 3679598^2 .

It is a cyclic number.

It is not a de Polignac number, because 20111112121333 - 2³³ = 20102522186741 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20111112121033) 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, 12247935916 + ... + 12247937557.

It is an arithmetic number, because the mean of its divisors is an integer number (5033901998907).

Almost surely, 2^{20111112121333} is an apocalyptic number.

It is an amenable number.

20111112121333 is a deficient number, since it is larger than the sum of its proper divisors (24495874295).

20111112121333 is an equidigital number, since it uses as much as digits as its factorization.

20111112121333 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24495874294.

The product of its (nonzero) digits is 216, while the sum is 22.

Adding to 20111112121333 its reverse (33312121111102), we get a palindrome (53423233232435).

The spelling of 20111112121333 in words is "twenty trillion, one hundred eleven billion, one hundred twelve million, one hundred twenty-one thousand, three hundred thirty-three".