222111221201 has 16 divisors (see below), whose sum is σ = 236160707328. Its totient is φ = 208172390400.

The previous prime is 222111221197. The next prime is 222111221209. The reversal of 222111221201 is 102122111222.

It is a cyclic number.

It is not a de Polignac number, because 222111221201 - 2² = 222111221197 is a prime.

It is a super-3 number, since 3×222111221201³ (a number of 35 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 222111221201.

It is not an unprimeable number, because it can be changed into a prime (222111221209) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5600321 + ... + 5639841.

It is an arithmetic number, because the mean of its divisors is an integer number (14760044208).

Almost surely, 2^222111221201 is an apocalyptic number.

It is an amenable number.

222111221201 is a deficient number, since it is larger than the sum of its proper divisors (14049486127).

222111221201 is a wasteful number, since it uses less digits than its factorization.

222111221201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40912.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 222111221201 its reverse (102122111222), we get a palindrome (324233332423).

The spelling of 222111221201 in words is "two hundred twenty-two billion, one hundred eleven million, two hundred twenty-one thousand, two hundred one".