20112202011011 has 4 divisors (see below), whose sum is σ = 21940584012024. Its totient is φ = 18283820010000.

The previous prime is 20112202010977. The next prime is 20112202011049. The reversal of 20112202011011 is 11011020221102.

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 20112202011011 - 2³⁴ = 20095022141827 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20112202011511) 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, 914191000490 + ... + 914191000511.

It is an arithmetic number, because the mean of its divisors is an integer number (5485146003006).

Almost surely, 2^{20112202011011} is an apocalyptic number.

20112202011011 is a deficient number, since it is larger than the sum of its proper divisors (1828382001013).

20112202011011 is a wasteful number, since it uses less digits than its factorization.

20112202011011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1828382001012.

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

Adding to 20112202011011 its reverse (11011020221102), we get a palindrome (31123222232113).

The spelling of 20112202011011 in words is "twenty trillion, one hundred twelve billion, two hundred two million, eleven thousand, eleven".