221441013440 has 28 divisors (see below), whose sum is σ = 527306414016. Its totient is φ = 88576405248.

The previous prime is 221441013419. The next prime is 221441013449. The reversal of 221441013440 is 44310144122.

It is a super-2 number, since 2×221441013440² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (221441013449) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 346001264 + ... + 346001903.

Almost surely, 2^221441013440 is an apocalyptic number.

221441013440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221441013440 is an abundant number, since it is smaller than the sum of its proper divisors (305865400576).

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

221441013440 is an equidigital number, since it uses as much as digits as its factorization.

221441013440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 692003184 (or 692003174 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 26.

Adding to 221441013440 its reverse (44310144122), we get a palindrome (265751157562).

The spelling of 221441013440 in words is "two hundred twenty-one billion, four hundred forty-one million, thirteen thousand, four hundred forty".