221103142 has 8 divisors (see below), whose sum is σ = 357166656. Its totient is φ = 102047592.

The previous prime is 221103137. The next prime is 221103161. The reversal of 221103142 is 241301122.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4251958 + ... + 4252009.

It is an arithmetic number, because the mean of its divisors is an integer number (44645832).

Almost surely, 2^221103142 is an apocalyptic number.

221103142 is a deficient number, since it is larger than the sum of its proper divisors (136063514).

221103142 is a wasteful number, since it uses less digits than its factorization.

221103142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8503982.

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 221103142 is about 14869.5373835234. The cubic root of 221103142 is about 604.6884008876.

Adding to 221103142 its reverse (241301122), we get a palindrome (462404264).

It can be divided in two parts, 22110 and 3142, that added together give a palindrome (25252).

The spelling of 221103142 in words is "two hundred twenty-one million, one hundred three thousand, one hundred forty-two".