22221222030 has 48 divisors (see below), whose sum is σ = 66028775904. Its totient is φ = 5079136320.

The previous prime is 22221222017. The next prime is 22221222083. The reversal of 22221222030 is 3022212222.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 22221221994 and 22221222012.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 17635261 + ... + 17636520.

It is an arithmetic number, because the mean of its divisors is an integer number (1375599498).

Almost surely, 2^22221222030 is an apocalyptic number.

22221222030 is an abundant number, since it is smaller than the sum of its proper divisors (43807553874).

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

22221222030 is a wasteful number, since it uses less digits than its factorization.

22221222030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35271801 (or 35271798 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

Adding to 22221222030 its reverse (3022212222), we get a palindrome (25243434252).

The spelling of 22221222030 in words is "twenty-two billion, two hundred twenty-one million, two hundred twenty-two thousand, thirty".