22001204144 has 20 divisors (see below), whose sum is σ = 42644744520. Its totient is φ = 10996108800.

The previous prime is 22001204129. The next prime is 22001204171. The reversal of 22001204144 is 44140210022.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 240257 + ... + 318944.

It is an arithmetic number, because the mean of its divisors is an integer number (2132237226).

Almost surely, 2^22001204144 is an apocalyptic number.

It is an amenable number.

22001204144 is a deficient number, since it is larger than the sum of its proper divisors (20643540376).

22001204144 is a wasteful number, since it uses less digits than its factorization.

22001204144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 561668 (or 561662 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 20.

Adding to 22001204144 its reverse (44140210022), we get a palindrome (66141414166).

The spelling of 22001204144 in words is "twenty-two billion, one million, two hundred four thousand, one hundred forty-four".