20011122223 has 8 divisors (see below), whose sum is σ = 20333252016. Its totient is φ = 19691424000.

The previous prime is 20011122199. The next prime is 20011122227. The reversal of 20011122223 is 32222111002.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20011122223 - 2¹³ = 20011114031 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20011122197 and 20011122206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20011122227) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 591298 + ... + 624223.

It is an arithmetic number, because the mean of its divisors is an integer number (2541656502).

Almost surely, 2^20011122223 is an apocalyptic number.

20011122223 is a deficient number, since it is larger than the sum of its proper divisors (322129793).

20011122223 is a wasteful number, since it uses less digits than its factorization.

20011122223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1215785.

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 20011122223 its reverse (32222111002), we get a palindrome (52233233225).

The spelling of 20011122223 in words is "twenty billion, eleven million, one hundred twenty-two thousand, two hundred twenty-three".