221313104434 has 16 divisors (see below), whose sum is σ = 332296963128. Its totient is φ = 110547505152.

The previous prime is 221313104417. The next prime is 221313104461. The reversal of 221313104434 is 434401313122.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 217199806209 + 4113298225 = 466047^2 + 64135^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9603694 + ... + 9626710.

Almost surely, 2^221313104434 is an apocalyptic number.

221313104434 is a deficient number, since it is larger than the sum of its proper divisors (110983858694).

221313104434 is a wasteful number, since it uses less digits than its factorization.

221313104434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27549.

The product of its (nonzero) digits is 6912, while the sum is 28.

Adding to 221313104434 its reverse (434401313122), we get a palindrome (655714417556).

The spelling of 221313104434 in words is "two hundred twenty-one billion, three hundred thirteen million, one hundred four thousand, four hundred thirty-four".