111221200221 has 8 divisors (see below), whose sum is σ = 148308824160. Its totient is φ = 74140521552.

The previous prime is 111221200199. The next prime is 111221200247. The reversal of 111221200221 is 122002122111.

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

It is not a de Polignac number, because 111221200221 - 2⁷ = 111221200093 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 111221200221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111221200421) 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, 1698835 + ... + 1763088.

It is an arithmetic number, because the mean of its divisors is an integer number (18538603020).

Almost surely, 2^111221200221 is an apocalyptic number.

It is an amenable number.

111221200221 is a deficient number, since it is larger than the sum of its proper divisors (37087623939).

111221200221 is a wasteful number, since it uses less digits than its factorization.

111221200221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3472635.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 111221200221 its reverse (122002122111), we get a palindrome (233223322332).

The spelling of 111221200221 in words is "one hundred eleven billion, two hundred twenty-one million, two hundred thousand, two hundred twenty-one".