221030144040 has 64 divisors (see below), whose sum is σ = 664121908800. Its totient is φ = 58849684992.

The previous prime is 221030144039. The next prime is 221030144053. The reversal of 221030144040 is 40441030122.

It is a junction number, because it is equal to n+sod(n) for n = 221030143998 and 221030144016.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1355125 + ... + 1509444.

It is an arithmetic number, because the mean of its divisors is an integer number (10376904825).

Almost surely, 2^221030144040 is an apocalyptic number.

221030144040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221030144040 is an abundant number, since it is smaller than the sum of its proper divisors (443091764760).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

221030144040 is a wasteful number, since it uses less digits than its factorization.

221030144040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2865226 (or 2865222 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 21.

Adding to 221030144040 its reverse (40441030122), we get a palindrome (261471174162).

The spelling of 221030144040 in words is "two hundred twenty-one billion, thirty million, one hundred forty-four thousand, forty".