220001223130 has 32 divisors (see below), whose sum is σ = 426494250000. Its totient is φ = 81225441792.

The previous prime is 220001223121. The next prime is 220001223149. The reversal of 220001223130 is 31322100022.

It can be written as a sum of positive squares in 8 ways, for example, as 110837723929 + 109163499201 = 332923^2 + 330399^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2060296 + ... + 2164444.

Almost surely, 2^220001223130 is an apocalyptic number.

220001223130 is a deficient number, since it is larger than the sum of its proper divisors (206493026870).

220001223130 is a wasteful number, since it uses less digits than its factorization.

220001223130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120418.

The product of its (nonzero) digits is 144, while the sum is 16.

Adding to 220001223130 its reverse (31322100022), we get a palindrome (251323323152).

The spelling of 220001223130 in words is "two hundred twenty billion, one million, two hundred twenty-three thousand, one hundred thirty".