22021144140 has 96 divisors (see below), whose sum is σ = 66112865280. Its totient is φ = 5456894976.

The previous prime is 22021144111. The next prime is 22021144151. The reversal of 22021144140 is 4144112022.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 56062 + ... + 217221.

It is an arithmetic number, because the mean of its divisors is an integer number (688675680).

Almost surely, 2^22021144140 is an apocalyptic number.

22021144140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22021144140 is an abundant number, since it is smaller than the sum of its proper divisors (44091721140).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22021144140 is a wasteful number, since it uses less digits than its factorization.

22021144140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 273391 (or 273389 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 21.

Adding to 22021144140 its reverse (4144112022), we get a palindrome (26165256162).

The spelling of 22021144140 in words is "twenty-two billion, twenty-one million, one hundred forty-four thousand, one hundred forty".