22123454146 has 8 divisors (see below), whose sum is σ = 33185815740. Its totient is φ = 11061515568.

The previous prime is 22123454113. The next prime is 22123454147. The reversal of 22123454146 is 64145432122.

It can be written as a sum of positive squares in 2 ways, for example, as 22123290121 + 164025 = 148739^2 + 405^2 .

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

It is not an unprimeable number, because it can be changed into a prime (22123454147) 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, 131020 + ... + 247816.

Almost surely, 2^22123454146 is an apocalyptic number.

22123454146 is a deficient number, since it is larger than the sum of its proper divisors (11062361594).

22123454146 is a wasteful number, since it uses less digits than its factorization.

22123454146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 211508.

The product of its digits is 46080, while the sum is 34.

Adding to 22123454146 its reverse (64145432122), we get a palindrome (86268886268).

The spelling of 22123454146 in words is "twenty-two billion, one hundred twenty-three million, four hundred fifty-four thousand, one hundred forty-six".