221041514545 has 8 divisors (see below), whose sum is σ = 268607410560. Its totient is φ = 174594816240.

The previous prime is 221041514543. The next prime is 221041514557. The reversal of 221041514545 is 545415140122.

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

It is not a de Polignac number, because 221041514545 - 2¹ = 221041514543 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 221041514545.

It is not an unprimeable number, because it can be changed into a prime (221041514543) 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, 279798991 + ... + 279799780.

It is an arithmetic number, because the mean of its divisors is an integer number (33575926320).

Almost surely, 2^221041514545 is an apocalyptic number.

It is an amenable number.

221041514545 is a deficient number, since it is larger than the sum of its proper divisors (47565896015).

221041514545 is an equidigital number, since it uses as much as digits as its factorization.

221041514545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 559598855.

The product of its (nonzero) digits is 32000, while the sum is 34.

Adding to 221041514545 its reverse (545415140122), we get a palindrome (766456654667).

The spelling of 221041514545 in words is "two hundred twenty-one billion, forty-one million, five hundred fourteen thousand, five hundred forty-five".