22120121222 has 8 divisors (see below), whose sum is σ = 33205303272. Its totient is φ = 11051686800.

The previous prime is 22120121159. The next prime is 22120121237. The reversal of 22120121222 is 22212102122.

It is a happy number.

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

It is a self number, because there is not a number n which added to its sum of digits gives 22120121222.

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, 4183604 + ... + 4188887.

It is an arithmetic number, because the mean of its divisors is an integer number (4150662909).

Almost surely, 2^22120121222 is an apocalyptic number.

22120121222 is a deficient number, since it is larger than the sum of its proper divisors (11085182050).

22120121222 is a wasteful number, since it uses less digits than its factorization.

22120121222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8373814.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 22120121222 its reverse (22212102122), we get a palindrome (44332223344).

The spelling of 22120121222 in words is "twenty-two billion, one hundred twenty million, one hundred twenty-one thousand, two hundred twenty-two".