221122445501 has 8 divisors (see below), whose sum is σ = 227898992640. Its totient is φ = 214432224048.

The previous prime is 221122445497. The next prime is 221122445521. The reversal of 221122445501 is 105544221122.

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 221122445501 - 2² = 221122445497 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 (221122445521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21576221 + ... + 21586466.

It is an arithmetic number, because the mean of its divisors is an integer number (28487374080).

Almost surely, 2^221122445501 is an apocalyptic number.

It is an amenable number.

221122445501 is a deficient number, since it is larger than the sum of its proper divisors (6776547139).

221122445501 is a wasteful number, since it uses less digits than its factorization.

221122445501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43162843.

The product of its (nonzero) digits is 6400, while the sum is 29.

Adding to 221122445501 its reverse (105544221122), we get a palindrome (326666666623).

The spelling of 221122445501 in words is "two hundred twenty-one billion, one hundred twenty-two million, four hundred forty-five thousand, five hundred one".