221440133441 has 8 divisors (see below), whose sum is σ = 229952131584. Its totient is φ = 213013683360.

The previous prime is 221440133437. The next prime is 221440133461. The reversal of 221440133441 is 144331044122.

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 221440133441 - 2² = 221440133437 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221440133461) 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, 21381740 + ... + 21392093.

It is an arithmetic number, because the mean of its divisors is an integer number (28744016448).

Almost surely, 2^221440133441 is an apocalyptic number.

It is an amenable number.

221440133441 is a deficient number, since it is larger than the sum of its proper divisors (8511998143).

221440133441 is a wasteful number, since it uses less digits than its factorization.

221440133441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42774031.

The product of its (nonzero) digits is 9216, while the sum is 29.

Adding to 221440133441 its reverse (144331044122), we get a palindrome (365771177563).

The spelling of 221440133441 in words is "two hundred twenty-one billion, four hundred forty million, one hundred thirty-three thousand, four hundred forty-one".