221440344130 has 16 divisors (see below), whose sum is σ = 399874273344. Its totient is φ = 88291325680.

The previous prime is 221440344109. The next prime is 221440344137. The reversal of 221440344130 is 31443044122.

It is not an unprimeable number, because it can be changed into a prime (221440344137) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35598232 + ... + 35604451.

It is an arithmetic number, because the mean of its divisors is an integer number (24992142084).

Almost surely, 2^221440344130 is an apocalyptic number.

221440344130 is a deficient number, since it is larger than the sum of its proper divisors (178433929214).

221440344130 is a wasteful number, since it uses less digits than its factorization.

221440344130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71203001.

The product of its (nonzero) digits is 9216, while the sum is 28.

Adding to 221440344130 its reverse (31443044122), we get a palindrome (252883388252).

The spelling of 221440344130 in words is "two hundred twenty-one billion, four hundred forty million, three hundred forty-four thousand, one hundred thirty".