22121012223 has 16 divisors (see below), whose sum is σ = 33096348000. Its totient is φ = 14601326400.

The previous prime is 22121012213. The next prime is 22121012237. The reversal of 22121012223 is 32221012122.

22121012223 is a `hidden beast` number, since 221 + 210 + 12 + 223 = 666.

It is not a de Polignac number, because 22121012223 - 2⁵ = 22121012191 is a prime.

It is a super-3 number, since 3×22121012223³ (a number of 32 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 22121012196 and 22121012205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22121012213) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4053198 + ... + 4058651.

It is an arithmetic number, because the mean of its divisors is an integer number (2068521750).

Almost surely, 2^22121012223 is an apocalyptic number.

22121012223 is a deficient number, since it is larger than the sum of its proper divisors (10975335777).

22121012223 is a wasteful number, since it uses less digits than its factorization.

22121012223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8111959 (or 8111953 counting only the distinct ones).

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

Adding to 22121012223 its reverse (32221012122), we get a palindrome (54342024345).

The spelling of 22121012223 in words is "twenty-two billion, one hundred twenty-one million, twelve thousand, two hundred twenty-three".