221313103442 has 16 divisors (see below), whose sum is σ = 335935789560. Its totient is φ = 109338206208.

The previous prime is 221313103397. The next prime is 221313103447. The reversal of 221313103442 is 244301313122.

It can be written as a sum of positive squares in 4 ways, for example, as 181236666961 + 40076436481 = 425719^2 + 200191^2 .

It is not an unprimeable number, because it can be changed into a prime (221313103447) 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, 804767 + ... + 1044162.

Almost surely, 2^221313103442 is an apocalyptic number.

221313103442 is a deficient number, since it is larger than the sum of its proper divisors (114622686118).

221313103442 is a wasteful number, since it uses less digits than its factorization.

221313103442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1849645.

The product of its (nonzero) digits is 3456, while the sum is 26.

Adding to 221313103442 its reverse (244301313122), we get a palindrome (465614416564).

The spelling of 221313103442 in words is "two hundred twenty-one billion, three hundred thirteen million, one hundred three thousand, four hundred forty-two".