222101221121 has 24 divisors (see below), whose sum is σ = 254853617760. Its totient is φ = 192800315136.

The previous prime is 222101221079. The next prime is 222101221163. The reversal of 222101221121 is 121122101222.

222101221121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (222101221079) and next prime (222101221163).

It is not a de Polignac number, because 222101221121 - 2⁶ = 222101221057 is a prime.

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

It is a self number, because there is not a number n which added to its sum of digits gives 222101221121.

It is not an unprimeable number, because it can be changed into a prime (222101221421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3586406 + ... + 3647808.

It is an arithmetic number, because the mean of its divisors is an integer number (10618900740).

Almost surely, 2^222101221121 is an apocalyptic number.

It is an amenable number.

222101221121 is a deficient number, since it is larger than the sum of its proper divisors (32752396639).

222101221121 is a wasteful number, since it uses less digits than its factorization.

222101221121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62705 (or 62692 counting only the distinct ones).

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

Adding to 222101221121 its reverse (121122101222), we get a palindrome (343223322343).

The spelling of 222101221121 in words is "two hundred twenty-two billion, one hundred one million, two hundred twenty-one thousand, one hundred twenty-one".