21153324222 has 24 divisors (see below), whose sum is σ = 45836800464. Its totient is φ = 7050400704.

The previous prime is 21153324191. The next prime is 21153324223. The reversal of 21153324222 is 22242335112.

21153324222 is a `hidden beast` number, since 2 + 115 + 3 + 324 + 222 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21153324223) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 144423 + ... + 251325.

It is an arithmetic number, because the mean of its divisors is an integer number (1909866686).

Almost surely, 2^21153324222 is an apocalyptic number.

21153324222 is an abundant number, since it is smaller than the sum of its proper divisors (24683476242).

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

21153324222 is a wasteful number, since it uses less digits than its factorization.

21153324222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117904 (or 117901 counting only the distinct ones).

The product of its digits is 5760, while the sum is 27.

Adding to 21153324222 its reverse (22242335112), we get a palindrome (43395659334).

The spelling of 21153324222 in words is "twenty-one billion, one hundred fifty-three million, three hundred twenty-four thousand, two hundred twenty-two".