22112133021 has 36 divisors (see below), whose sum is σ = 35769821724. Its totient is φ = 13148403840.

The previous prime is 22112132929. The next prime is 22112133049. The reversal of 22112133021 is 12033121122.

It can be written as a sum of positive squares in 2 ways, for example, as 10130422500 + 11981710521 = 100650^2 + 109461^2 .

It is not a de Polignac number, because 22112133021 - 2¹⁰ = 22112131997 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 22112132985 and 22112133003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22112133521) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 133840 + ... + 249273.

It is an arithmetic number, because the mean of its divisors is an integer number (993606159).

Almost surely, 2^22112133021 is an apocalyptic number.

It is an amenable number.

22112133021 is a deficient number, since it is larger than the sum of its proper divisors (13657688703).

22112133021 is a wasteful number, since it uses less digits than its factorization.

22112133021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 383194 (or 383180 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 22112133021 its reverse (12033121122), we get a palindrome (34145254143).

The spelling of 22112133021 in words is "twenty-two billion, one hundred twelve million, one hundred thirty-three thousand, twenty-one".