22021131226 has 8 divisors (see below), whose sum is σ = 33654936564. Its totient is φ = 10802819040.

The previous prime is 22021131221. The next prime is 22021131227. The reversal of 22021131226 is 62213112022.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 20728800625 + 1292330601 = 143975^2 + 35949^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 22021131197 and 22021131206.

It is not an unprimeable number, because it can be changed into a prime (22021131221) 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, 103873155 + ... + 103873366.

Almost surely, 2^22021131226 is an apocalyptic number.

22021131226 is a deficient number, since it is larger than the sum of its proper divisors (11633805338).

22021131226 is a wasteful number, since it uses less digits than its factorization.

22021131226 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 207746576.

The product of its (nonzero) digits is 576, while the sum is 22.

Adding to 22021131226 its reverse (62213112022), we get a palindrome (84234243248).

The spelling of 22021131226 in words is "twenty-two billion, twenty-one million, one hundred thirty-one thousand, two hundred twenty-six".