221041514550 has 48 divisors (see below), whose sum is σ = 548213050512. Its totient is φ = 58941168000.

The previous prime is 221041514543. The next prime is 221041514557. The reversal of 221041514550 is 55415140122.

It is an interprime number because it is at equal distance from previous prime (221041514543) and next prime (221041514557).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221041514557) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4128552 + ... + 4181748.

It is an arithmetic number, because the mean of its divisors is an integer number (11421105219).

Almost surely, 2^221041514550 is an apocalyptic number.

221041514550 is an abundant number, since it is smaller than the sum of its proper divisors (327171535962).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

221041514550 is a wasteful number, since it uses less digits than its factorization.

221041514550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80913 (or 80908 counting only the distinct ones).

The product of its (nonzero) digits is 8000, while the sum is 30.

Adding to 221041514550 its reverse (55415140122), we get a palindrome (276456654672).

The spelling of 221041514550 in words is "two hundred twenty-one billion, forty-one million, five hundred fourteen thousand, five hundred fifty".