221144023105 has 32 divisors (see below), whose sum is σ = 268516080000. Its totient is φ = 174833856000.

The previous prime is 221144023091. The next prime is 221144023127. The reversal of 221144023105 is 501320441122.

It is not a de Polignac number, because 221144023105 - 2¹⁹ = 221143498817 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 221144023105.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 208429275 + ... + 208430335.

It is an arithmetic number, because the mean of its divisors is an integer number (8391127500).

Almost surely, 2^221144023105 is an apocalyptic number.

It is an amenable number.

221144023105 is a deficient number, since it is larger than the sum of its proper divisors (47372056895).

221144023105 is a wasteful number, since it uses less digits than its factorization.

221144023105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2305.

The product of its (nonzero) digits is 1920, while the sum is 25.

Adding to 221144023105 its reverse (501320441122), we get a palindrome (722464464227).

The spelling of 221144023105 in words is "two hundred twenty-one billion, one hundred forty-four million, twenty-three thousand, one hundred five".