112222121 has 8 divisors (see below), whose sum is σ = 122814144. Its totient is φ = 101695120.

The previous prime is 112222109. The next prime is 112222133. The reversal of 112222121 is 121222211.

It is an interprime number because it is at equal distance from previous prime (112222109) and next prime (112222133).

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

It is a cyclic number.

It is not a de Polignac number, because 112222121 - 2²² = 108027817 is a prime.

It is a super-3 number, since 3×112222121³ (a number of 25 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 112222096 and 112222105.

It is not an unprimeable number, because it can be changed into a prime (112222171) 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, 12605 + ... + 19578.

It is an arithmetic number, because the mean of its divisors is an integer number (15351768).

Almost surely, 2^112222121 is an apocalyptic number.

112222121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

112222121 is a deficient number, since it is larger than the sum of its proper divisors (10592023).

112222121 is a wasteful number, since it uses less digits than its factorization.

112222121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32511.

The product of its digits is 32, while the sum is 14.

The square root of 112222121 is about 10593.4942771495. The cubic root of 112222121 is about 482.3468990836.

Adding to 112222121 its reverse (121222211), we get a palindrome (233444332).

The spelling of 112222121 in words is "one hundred twelve million, two hundred twenty-two thousand, one hundred twenty-one".