22100021222 has 8 divisors (see below), whose sum is σ = 33151348272. Its totient is φ = 11049571800.

The previous prime is 22100021197. The next prime is 22100021243. The reversal of 22100021222 is 22212000122.

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 = 22100021197 and 22100021206.

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, 152354 + ... + 259637.

It is an arithmetic number, because the mean of its divisors is an integer number (4143918534).

Almost surely, 2^22100021222 is an apocalyptic number.

22100021222 is a deficient number, since it is larger than the sum of its proper divisors (11051327050).

22100021222 is a wasteful number, since it uses less digits than its factorization.

22100021222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 438814.

The product of its (nonzero) digits is 64, while the sum is 14.

Adding to 22100021222 its reverse (22212000122), we get a palindrome (44312021344).

The spelling of 22100021222 in words is "twenty-two billion, one hundred million, twenty-one thousand, two hundred twenty-two".