221440021222 has 8 divisors (see below), whose sum is σ = 379611464976. Its totient is φ = 94902866232.

The previous prime is 221440021219. The next prime is 221440021237. The reversal of 221440021222 is 222120044122.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 221440021193 and 221440021202.

It is a congruent number.

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, 7908572173 + ... + 7908572200.

It is an arithmetic number, because the mean of its divisors is an integer number (47451433122).

Almost surely, 2^221440021222 is an apocalyptic number.

221440021222 is a deficient number, since it is larger than the sum of its proper divisors (158171443754).

221440021222 is a wasteful number, since it uses less digits than its factorization.

221440021222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15817144382.

The product of its (nonzero) digits is 1024, while the sum is 22.

Adding to 221440021222 its reverse (222120044122), we get a palindrome (443560065344).

The spelling of 221440021222 in words is "two hundred twenty-one billion, four hundred forty million, twenty-one thousand, two hundred twenty-two".