220231021144 has 32 divisors (see below), whose sum is σ = 434731492800. Its totient is φ = 104304356640.

The previous prime is 220231021139. The next prime is 220231021217. The reversal of 220231021144 is 441120132022.

It is a congruent number.

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, 944979 + ... + 1154749.

It is an arithmetic number, because the mean of its divisors is an integer number (13585359150).

Almost surely, 2^220231021144 is an apocalyptic number.

It is an amenable number.

220231021144 is a deficient number, since it is larger than the sum of its proper divisors (214500471656).

220231021144 is a wasteful number, since it uses less digits than its factorization.

220231021144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 216703 (or 216699 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 22.

Adding to 220231021144 its reverse (441120132022), we get a palindrome (661351153166).

The spelling of 220231021144 in words is "two hundred twenty billion, two hundred thirty-one million, twenty-one thousand, one hundred forty-four".