20112011213 has 16 divisors (see below), whose sum is σ = 23533065600. Its totient is φ = 16837496928.

The previous prime is 20112011203. The next prime is 20112011263. The reversal of 20112011213 is 31211021102.

It is not a de Polignac number, because 20112011213 - 2⁶ = 20112011149 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20112011203) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 538481 + ... + 574617.

It is an arithmetic number, because the mean of its divisors is an integer number (1470816600).

Almost surely, 2^20112011213 is an apocalyptic number.

It is an amenable number.

20112011213 is a deficient number, since it is larger than the sum of its proper divisors (3421054387).

20112011213 is an frugal number, since it uses more digits than its factorization.

20112011213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36273 (or 36187 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 14.

Adding to 20112011213 its reverse (31211021102), we get a palindrome (51323032315).

The spelling of 20112011213 in words is "twenty billion, one hundred twelve million, eleven thousand, two hundred thirteen".