220231012 has 12 divisors (see below), whose sum is σ = 388940860. Its totient is φ = 109105056.

The previous prime is 220231007. The next prime is 220231021. The reversal of 220231012 is 210132022.

It can be written as a sum of positive squares in 2 ways, for example, as 61873956 + 158357056 = 7866^2 + 12584^2 .

It is a junction number, because it is equal to n+sod(n) for n = 220230983 and 220231001.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 252123 + ... + 252994.

Almost surely, 2^220231012 is an apocalyptic number.

It is an amenable number.

220231012 is a deficient number, since it is larger than the sum of its proper divisors (168709848).

220231012 is a wasteful number, since it uses less digits than its factorization.

220231012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 505230 (or 505228 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 220231012 is about 14840.1823438932. The cubic root of 220231012 is about 603.8922991161.

Adding to 220231012 its reverse (210132022), we get a palindrome (430363034).

The spelling of 220231012 in words is "two hundred twenty million, two hundred thirty-one thousand, twelve".