221322440120 has 64 divisors (see below), whose sum is σ = 542260116000. Its totient is φ = 80977494528.

The previous prime is 221322440107. The next prime is 221322440123. The reversal of 221322440120 is 21044223122.

It is a super-2 number, since 2×221322440120² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221322440123) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4998887 + ... + 5042966.

Almost surely, 2^221322440120 is an apocalyptic number.

221322440120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221322440120 is an abundant number, since it is smaller than the sum of its proper divisors (320937675880).

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

221322440120 is a wasteful number, since it uses less digits than its factorization.

221322440120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10041912 (or 10041908 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 23.

Adding to 221322440120 its reverse (21044223122), we get a palindrome (242366663242).

The spelling of 221322440120 in words is "two hundred twenty-one billion, three hundred twenty-two million, four hundred forty thousand, one hundred twenty".