221032443040 has 48 divisors (see below), whose sum is σ = 522681715080. Its totient is φ = 88329579520.

The previous prime is 221032443031. The next prime is 221032443043. The reversal of 221032443040 is 40344230122.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 132673691536 + 88358751504 = 364244^2 + 297252^2 .

It is a junction number, because it is equal to n+sod(n) for n = 221032442996 and 221032443014.

It is not an unprimeable number, because it can be changed into a prime (221032443043) 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, 481255 + ... + 820774.

Almost surely, 2^221032443040 is an apocalyptic number.

221032443040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221032443040 is an abundant number, since it is smaller than the sum of its proper divisors (301649272040).

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

221032443040 is a wasteful number, since it uses less digits than its factorization.

221032443040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1303105 (or 1303097 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 25.

Adding to 221032443040 its reverse (40344230122), we get a palindrome (261376673162).

The spelling of 221032443040 in words is "two hundred twenty-one billion, thirty-two million, four hundred forty-three thousand, forty".