222221100022 has 4 divisors (see below), whose sum is σ = 333331650036. Its totient is φ = 111110550010.

The previous prime is 222221100001. The next prime is 222221100029. The reversal of 222221100022 is 220001122222.

It is a semiprime because it is the product of two primes.

It is a zygodrome in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 222221099969 and 222221100005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222221100029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55555275004 + ... + 55555275007.

It is an arithmetic number, because the mean of its divisors is an integer number (83332912509).

Almost surely, 2^222221100022 is an apocalyptic number.

222221100022 is a deficient number, since it is larger than the sum of its proper divisors (111110550014).

222221100022 is a wasteful number, since it uses less digits than its factorization.

222221100022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111110550013.

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 222221100022 its reverse (220001122222), we get a palindrome (442222222244).

The spelling of 222221100022 in words is "two hundred twenty-two billion, two hundred twenty-one million, one hundred thousand, twenty-two".