221501321440045 has 8 divisors (see below), whose sum is σ = 265801761815040. Its totient is φ = 177200939760720.

The previous prime is 221501321440019. The next prime is 221501321440067. The reversal of 221501321440045 is 540044123105122.

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

It is not a de Polignac number, because 221501321440045 - 2²⁹ = 221500784569133 is a prime.

It is a super-2 number, since 2×221501321440045² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5894161 + ... + 21857350.

It is an arithmetic number, because the mean of its divisors is an integer number (33225220226880).

Almost surely, 2^{221501321440045} is an apocalyptic number.

It is an amenable number.

221501321440045 is a deficient number, since it is larger than the sum of its proper divisors (44300440374995).

221501321440045 is a wasteful number, since it uses less digits than its factorization.

221501321440045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29347835.

The product of its (nonzero) digits is 38400, while the sum is 34.

Adding to 221501321440045 its reverse (540044123105122), we get a palindrome (761545444545167).

The spelling of 221501321440045 in words is "two hundred twenty-one trillion, five hundred one billion, three hundred twenty-one million, four hundred forty thousand, forty-five".