222121273 has 16 divisors (see below), whose sum is σ = 250062912. Its totient is φ = 197181600.

The previous prime is 222121271. The next prime is 222121283. The reversal of 222121273 is 372121222.

It is not a de Polignac number, because 222121273 - 2¹ = 222121271 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222121271) 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, 55293 + ... + 59173.

It is an arithmetic number, because the mean of its divisors is an integer number (15628932).

Almost surely, 2^222121273 is an apocalyptic number.

It is an amenable number.

222121273 is a deficient number, since it is larger than the sum of its proper divisors (27941639).

222121273 is an equidigital number, since it uses as much as digits as its factorization.

222121273 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3957 (or 3935 counting only the distinct ones).

The product of its digits is 672, while the sum is 22.

The square root of 222121273 is about 14903.7335255298. The cubic root of 222121273 is about 605.6151319302.

Adding to 222121273 its reverse (372121222), we get a palindrome (594242495).

The spelling of 222121273 in words is "two hundred twenty-two million, one hundred twenty-one thousand, two hundred seventy-three".