220220730331 has 12 divisors (see below), whose sum is σ = 256182863400. Its totient is φ = 188754931680.

The previous prime is 220220730293. The next prime is 220220730343. The reversal of 220220730331 is 133037022022.

It is not a de Polignac number, because 220220730331 - 2¹¹ = 220220728283 is a prime.

It is a super-2 number, since 2×220220730331² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 220220730296 and 220220730305.

It is not an unprimeable number, because it can be changed into a prime (220220730131) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2789895 + ... + 2867743.

It is an arithmetic number, because the mean of its divisors is an integer number (21348571950).

Almost surely, 2^220220730331 is an apocalyptic number.

220220730331 is a deficient number, since it is larger than the sum of its proper divisors (35962133069).

220220730331 is an equidigital number, since it uses as much as digits as its factorization.

220220730331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135594 (or 135587 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 25.

Adding to 220220730331 its reverse (133037022022), we get a palindrome (353257752353).

The spelling of 220220730331 in words is "two hundred twenty billion, two hundred twenty million, seven hundred thirty thousand, three hundred thirty-one".