22212120444 has 24 divisors (see below), whose sum is σ = 51836018640. Its totient is φ = 7402934784.

The previous prime is 22212120439. The next prime is 22212120473. The reversal of 22212120444 is 44402121222.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 52309 + ... + 217164.

It is an arithmetic number, because the mean of its divisors is an integer number (2159834110).

Almost surely, 2^22212120444 is an apocalyptic number.

It is an amenable number.

22212120444 is an abundant number, since it is smaller than the sum of its proper divisors (29623898196).

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

22212120444 is a wasteful number, since it uses less digits than its factorization.

22212120444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 276349 (or 276347 counting only the distinct ones).

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

Adding to 22212120444 its reverse (44402121222), we get a palindrome (66614241666).

The spelling of 22212120444 in words is "twenty-two billion, two hundred twelve million, one hundred twenty thousand, four hundred forty-four".