20211122222 has 8 divisors (see below), whose sum is σ = 30317409000. Its totient is φ = 10105319224.

The previous prime is 20211122209. The next prime is 20211122227. The reversal of 20211122222 is 22222111202.

It is a happy number.

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

It is a super-2 number, since 2×20211122222² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20211122222.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20211122227) 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, 13304 + ... + 201492.

It is an arithmetic number, because the mean of its divisors is an integer number (3789676125).

Almost surely, 2^20211122222 is an apocalyptic number.

20211122222 is a deficient number, since it is larger than the sum of its proper divisors (10106286778).

20211122222 is a wasteful number, since it uses less digits than its factorization.

20211122222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 241890.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 20211122222 its reverse (22222111202), we get a palindrome (42433233424).

The spelling of 20211122222 in words is "twenty billion, two hundred eleven million, one hundred twenty-two thousand, two hundred twenty-two".