22112232021 has 12 divisors (see below), whose sum is σ = 34843517280. Its totient is φ = 13401352680.

The previous prime is 22112231983. The next prime is 22112232029. The reversal of 22112232021 is 12023221122.

22112232021 is a `hidden beast` number, since 221 + 122 + 320 + 2 + 1 = 666.

It is not a de Polignac number, because 22112232021 - 2⁶ = 22112231957 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 22112231985 and 22112232003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22112232029) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 111677841 + ... + 111678038.

It is an arithmetic number, because the mean of its divisors is an integer number (2903626440).

Almost surely, 2^22112232021 is an apocalyptic number.

It is an amenable number.

22112232021 is a deficient number, since it is larger than the sum of its proper divisors (12731285259).

22112232021 is a wasteful number, since it uses less digits than its factorization.

22112232021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 223355896 (or 223355893 counting only the distinct ones).

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

Adding to 22112232021 its reverse (12023221122), we get a palindrome (34135453143).

The spelling of 22112232021 in words is "twenty-two billion, one hundred twelve million, two hundred thirty-two thousand, twenty-one".