220220033231 has 4 divisors (see below), whose sum is σ = 240240036264. Its totient is φ = 200200030200.

The previous prime is 220220033227. The next prime is 220220033321. The reversal of 220220033231 is 132330022022.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 220220033231 - 2² = 220220033227 is a prime.

It is a super-2 number, since 2×220220033231² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220220033731) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 10010001500 + ... + 10010001521.

It is an arithmetic number, because the mean of its divisors is an integer number (60060009066).

Almost surely, 2^220220033231 is an apocalyptic number.

220220033231 is a deficient number, since it is larger than the sum of its proper divisors (20020003033).

220220033231 is a wasteful number, since it uses less digits than its factorization.

220220033231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20020003032.

The product of its (nonzero) digits is 864, while the sum is 20.

Adding to 220220033231 its reverse (132330022022), we get a palindrome (352550055253).

The spelling of 220220033231 in words is "two hundred twenty billion, two hundred twenty million, thirty-three thousand, two hundred thirty-one".