221044422340 has 192 divisors, whose sum is σ = 562464000000. Its totient is φ = 72851487744.

The previous prime is 221044422307. The next prime is 221044422353. The reversal of 221044422340 is 43224440122.

It is a super-4 number, since 4×221044422340⁴ (a number of 46 digits) contains 4444 as substring.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a junction number, because it is equal to n+sod(n) for n = 221044422299 and 221044422308.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 47544336 + ... + 47548984.

It is an arithmetic number, because the mean of its divisors is an integer number (2929500000).

Almost surely, 2^221044422340 is an apocalyptic number.

221044422340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 221044422340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (281232000000).

221044422340 is an abundant number, since it is smaller than the sum of its proper divisors (341419577660).

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

221044422340 is a wasteful number, since it uses less digits than its factorization.

221044422340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4947 (or 4931 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 28.

Adding to 221044422340 its reverse (43224440122), we get a palindrome (264268862462).

It can be divided in two parts, 22104 and 4422340, that added together give a palindrome (4444444).

The spelling of 221044422340 in words is "two hundred twenty-one billion, forty-four million, four hundred twenty-two thousand, three hundred forty".