20430112211 has 4 divisors (see below), whose sum is σ = 20431024872. Its totient is φ = 20429199552.

The previous prime is 20430112103. The next prime is 20430112217. The reversal of 20430112211 is 11221103402.

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 20430112211 - 2³⁰ = 19356370387 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20430112211.

It is not an unprimeable number, because it can be changed into a prime (20430112217) 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, 421886 + ... + 467811.

It is an arithmetic number, because the mean of its divisors is an integer number (5107756218).

Almost surely, 2^20430112211 is an apocalyptic number.

20430112211 is a deficient number, since it is larger than the sum of its proper divisors (912661).

20430112211 is an equidigital number, since it uses as much as digits as its factorization.

20430112211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 912660.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 20430112211 its reverse (11221103402), we get a palindrome (31651215613).

The spelling of 20430112211 in words is "twenty billion, four hundred thirty million, one hundred twelve thousand, two hundred eleven".