1222100200221 has 8 divisors (see below), whose sum is σ = 1636460354880. Its totient is φ = 811236756192.

The previous prime is 1222100200219. The next prime is 1222100200231. The reversal of 1222100200221 is 1220020012221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1222100200221 - 2¹ = 1222100200219 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1222100200221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1222100200231) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 874176841 + ... + 874178238.

It is an arithmetic number, because the mean of its divisors is an integer number (204557544360).

Almost surely, 2^{1222100200221} is an apocalyptic number.

It is an amenable number.

1222100200221 is a deficient number, since it is larger than the sum of its proper divisors (414360154659).

1222100200221 is a wasteful number, since it uses less digits than its factorization.

1222100200221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1748355315.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 1222100200221 its reverse (1220020012221), we get a palindrome (2442120212442).

The spelling of 1222100200221 in words is "one trillion, two hundred twenty-two billion, one hundred million, two hundred thousand, two hundred twenty-one".