22110223212 has 96 divisors (see below), whose sum is σ = 71467415040. Its totient is φ = 5742912960.

The previous prime is 22110223211. The next prime is 22110223231. The reversal of 22110223212 is 21232201122.

22110223212 is a `hidden beast` number, since 221 + 10 + 223 + 212 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (22110223211) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1321063 + ... + 1337694.

It is an arithmetic number, because the mean of its divisors is an integer number (744452240).

Almost surely, 2^22110223212 is an apocalyptic number.

22110223212 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

22110223212 is an abundant number, since it is smaller than the sum of its proper divisors (49357191828).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22110223212 is a wasteful number, since it uses less digits than its factorization.

22110223212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2658788 (or 2658780 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 22110223212 its reverse (21232201122), we get a palindrome (43342424334).

The spelling of 22110223212 in words is "twenty-two billion, one hundred ten million, two hundred twenty-three thousand, two hundred twelve".