221224322000 has 80 divisors (see below), whose sum is σ = 583549596864. Its totient is φ = 80445200000.

The previous prime is 221224321931. The next prime is 221224322023. The reversal of 221224322000 is 223422122.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5005826 + ... + 5049825.

Almost surely, 2^221224322000 is an apocalyptic number.

221224322000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221224322000 is an abundant number, since it is smaller than the sum of its proper divisors (362325274864).

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

221224322000 is a wasteful number, since it uses less digits than its factorization.

221224322000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10055685 (or 10055669 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 20.

Adding to 221224322000 its reverse (223422122), we get a palindrome (221447744122).

The spelling of 221224322000 in words is "two hundred twenty-one billion, two hundred twenty-four million, three hundred twenty-two thousand".