22121311222 has 8 divisors (see below), whose sum is σ = 34928386200. Its totient is φ = 10478515824.

The previous prime is 22121311213. The next prime is 22121311301. The reversal of 22121311222 is 22211312122.

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

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a self number, because there is not a number n which added to its sum of digits gives 22121311222.

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, 291069847 + ... + 291069922.

It is an arithmetic number, because the mean of its divisors is an integer number (4366048275).

Almost surely, 2^22121311222 is an apocalyptic number.

22121311222 is a deficient number, since it is larger than the sum of its proper divisors (12807074978).

22121311222 is a wasteful number, since it uses less digits than its factorization.

22121311222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 582139790.

The product of its digits is 192, while the sum is 19.

Adding to 22121311222 its reverse (22211312122), we get a palindrome (44332623344).

The spelling of 22121311222 in words is "twenty-two billion, one hundred twenty-one million, three hundred eleven thousand, two hundred twenty-two".