20111102222 has 8 divisors (see below), whose sum is σ = 30333320472. Its totient is φ = 9999995400.

The previous prime is 20111102183. The next prime is 20111102251. The reversal of 20111102222 is 22220111102.

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

It is a junction number, because it is equal to n+sod(n) for n = 20111102197 and 20111102206.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27777404 + ... + 27778127.

It is an arithmetic number, because the mean of its divisors is an integer number (3791665059).

Almost surely, 2^20111102222 is an apocalyptic number.

20111102222 is a deficient number, since it is larger than the sum of its proper divisors (10222218250).

20111102222 is a wasteful number, since it uses less digits than its factorization.

20111102222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55555714.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 20111102222 its reverse (22220111102), we get a palindrome (42331213324).

It can be divided in two parts, 20111102 and 222, that multiplied together give a palindrome (4464664644).

The spelling of 20111102222 in words is "twenty billion, one hundred eleven million, one hundred two thousand, two hundred twenty-two".