221551041130 has 16 divisors (see below), whose sum is σ = 408518505864. Its totient is φ = 86458942720.

The previous prime is 221551041121. The next prime is 221551041157. The reversal of 221551041130 is 31140155122.

It can be written as a sum of positive squares in 4 ways, for example, as 148341292801 + 73209748329 = 385151^2 + 270573^2 .

It is a junction number, because it is equal to n+sod(n) for n = 221551041095 and 221551041104.

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, 270183787 + ... + 270184606.

Almost surely, 2^221551041130 is an apocalyptic number.

221551041130 is a deficient number, since it is larger than the sum of its proper divisors (186967464734).

221551041130 is a wasteful number, since it uses less digits than its factorization.

221551041130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 540368441.

The product of its (nonzero) digits is 1200, while the sum is 25.

Adding to 221551041130 its reverse (31140155122), we get a palindrome (252691196252).

The spelling of 221551041130 in words is "two hundred twenty-one billion, five hundred fifty-one million, forty-one thousand, one hundred thirty".