22221110002 has 24 divisors (see below), whose sum is σ = 41248996416. Its totient is φ = 8790767856.

The previous prime is 22221109987. The next prime is 22221110003. The reversal of 22221110002 is 20001112222.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is not an unprimeable number, because it can be changed into a prime (22221110003) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4693558 + ... + 4698289.

It is an arithmetic number, because the mean of its divisors is an integer number (1718708184).

Almost surely, 2^22221110002 is an apocalyptic number.

22221110002 is a deficient number, since it is larger than the sum of its proper divisors (19027886414).

22221110002 is a wasteful number, since it uses less digits than its factorization.

22221110002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9391882 (or 9391869 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 22221110002 its reverse (20001112222), we get a palindrome (42222222224).

The spelling of 22221110002 in words is "twenty-two billion, two hundred twenty-one million, one hundred ten thousand, two".