221105242650 has 48 divisors (see below), whose sum is σ = 548740887264. Its totient is φ = 58918399680.

The previous prime is 221105242613. The next prime is 221105242669. The reversal of 221105242650 is 56242501122.

221105242650 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 330844 + ... + 742743.

It is an arithmetic number, because the mean of its divisors is an integer number (11432101818).

Almost surely, 2^221105242650 is an apocalyptic number.

221105242650 is an abundant number, since it is smaller than the sum of its proper divisors (327635644614).

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

221105242650 is a wasteful number, since it uses less digits than its factorization.

221105242650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1074975 (or 1074970 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 30.

Adding to 221105242650 its reverse (56242501122), we get a palindrome (277347743772).

The spelling of 221105242650 in words is "two hundred twenty-one billion, one hundred five million, two hundred forty-two thousand, six hundred fifty".