222112261 has 8 divisors (see below), whose sum is σ = 267202880. Its totient is φ = 180361728.

The previous prime is 222112217. The next prime is 222112273. The reversal of 222112261 is 162211222.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-222112261 is a prime.

It is a super-3 number, since 3×222112261³ (a number of 26 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222112201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 834876 + ... + 835141.

It is an arithmetic number, because the mean of its divisors is an integer number (33400360).

Almost surely, 2^222112261 is an apocalyptic number.

222112261 is the 8605-th hex number.

It is an amenable number.

222112261 is a deficient number, since it is larger than the sum of its proper divisors (45090619).

222112261 is a wasteful number, since it uses less digits than its factorization.

222112261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1670043.

The product of its digits is 192, while the sum is 19.

The square root of 222112261 is about 14903.4311821137. The cubic root of 222112261 is about 605.6069413934.

Adding to 222112261 its reverse (162211222), we get a palindrome (384323483).

The spelling of 222112261 in words is "two hundred twenty-two million, one hundred twelve thousand, two hundred sixty-one".