221121200222 has 16 divisors (see below), whose sum is σ = 357409872960. Its totient is φ = 101994770592.

The previous prime is 221121200219. The next prime is 221121200239. The reversal of 221121200222 is 222002121122.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 221121200222.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2504438 + ... + 2591225.

It is an arithmetic number, because the mean of its divisors is an integer number (22338117060).

Almost surely, 2^221121200222 is an apocalyptic number.

221121200222 is a deficient number, since it is larger than the sum of its proper divisors (136288672738).

221121200222 is a wasteful number, since it uses less digits than its factorization.

221121200222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5097347.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 221121200222 its reverse (222002121122), we get a palindrome (443123321344).

The spelling of 221121200222 in words is "two hundred twenty-one billion, one hundred twenty-one million, two hundred thousand, two hundred twenty-two".