221222010444 has 48 divisors (see below), whose sum is σ = 524836811520. Its totient is φ = 72510137280.

The previous prime is 221222010437. The next prime is 221222010479. The reversal of 221222010444 is 444010222122.

It is a happy number.

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, 19639 + ... + 665454.

It is an arithmetic number, because the mean of its divisors is an integer number (10934100240).

Almost surely, 2^221222010444 is an apocalyptic number.

It is an amenable number.

221222010444 is an abundant number, since it is smaller than the sum of its proper divisors (303614801076).

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

221222010444 is a wasteful number, since it uses less digits than its factorization.

221222010444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 685550 (or 685548 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 24.

Adding to 221222010444 its reverse (444010222122), we get a palindrome (665232232566).

The spelling of 221222010444 in words is "two hundred twenty-one billion, two hundred twenty-two million, ten thousand, four hundred forty-four".