112222210111221 has 16 divisors (see below), whose sum is σ = 171255646324224. Its totient is φ = 64033087041264.

The previous prime is 112222210111199. The next prime is 112222210111283. The reversal of 112222210111221 is 122111012222211.

It is not a de Polignac number, because 112222210111221 - 2⁵ = 112222210111189 is a prime.

It is a super-2 number, since 2×112222210111221² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (112222210111021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3912075531 + ... + 3912104216.

It is an arithmetic number, because the mean of its divisors is an integer number (10703477895264).

Almost surely, 2^{112222210111221} is an apocalyptic number.

It is an amenable number.

112222210111221 is a deficient number, since it is larger than the sum of its proper divisors (59033436213003).

112222210111221 is an equidigital number, since it uses as much as digits as its factorization.

112222210111221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7824180440.

The product of its (nonzero) digits is 128, while the sum is 21.

Adding to 112222210111221 its reverse (122111012222211), we get a palindrome (234333222333432).

The spelling of 112222210111221 in words is "one hundred twelve trillion, two hundred twenty-two billion, two hundred ten million, one hundred eleven thousand, two hundred twenty-one".