221103134440 has 32 divisors (see below), whose sum is σ = 497771273160. Its totient is φ = 88389836800.

The previous prime is 221103134401. The next prime is 221103134443. The reversal of 221103134440 is 44431301122.

221103134440 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 209674241604 + 11428892836 = 457902^2 + 106906^2 .

It is a super-2 number, since 2×221103134440² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (221103134443) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1537081 + ... + 1674760.

Almost surely, 2^221103134440 is an apocalyptic number.

221103134440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221103134440 is an abundant number, since it is smaller than the sum of its proper divisors (276668138720).

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

221103134440 is a wasteful number, since it uses less digits than its factorization.

221103134440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3213573 (or 3213569 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 25.

Adding to 221103134440 its reverse (44431301122), we get a palindrome (265534435562).

The spelling of 221103134440 in words is "two hundred twenty-one billion, one hundred three million, one hundred thirty-four thousand, four hundred forty".