221440443013 has 8 divisors (see below), whose sum is σ = 226001098080. Its totient is φ = 216916716720.

The previous prime is 221440442963. The next prime is 221440443019. The reversal of 221440443013 is 310344044122.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 221440443013 - 2¹³ = 221440434821 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221440443019) 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, 9220078 + ... + 9244063.

It is an arithmetic number, because the mean of its divisors is an integer number (28250137260).

Almost surely, 2^221440443013 is an apocalyptic number.

It is an amenable number.

221440443013 is a deficient number, since it is larger than the sum of its proper divisors (4560655067).

221440443013 is a wasteful number, since it uses less digits than its factorization.

221440443013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18464387.

The product of its (nonzero) digits is 9216, while the sum is 28.

Adding to 221440443013 its reverse (310344044122), we get a palindrome (531784487135).

The spelling of 221440443013 in words is "two hundred twenty-one billion, four hundred forty million, four hundred forty-three thousand, thirteen".