222120231 has 4 divisors (see below), whose sum is σ = 296160312. Its totient is φ = 148080152.

The previous prime is 222120211. The next prime is 222120233. The reversal of 222120231 is 132021222.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 222120231 - 2¹³ = 222112039 is a prime.

It is a super-2 number, since 2×222120231² = 98674794038986722, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 222120231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222120233) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37020036 + ... + 37020041.

It is an arithmetic number, because the mean of its divisors is an integer number (74040078).

Almost surely, 2^222120231 is an apocalyptic number.

222120231 is a deficient number, since it is larger than the sum of its proper divisors (74040081).

222120231 is an equidigital number, since it uses as much as digits as its factorization.

222120231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74040080.

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 222120231 is about 14903.6985678052. The cubic root of 222120231 is about 605.6141849221.

Adding to 222120231 its reverse (132021222), we get a palindrome (354141453).

Subtracting from 222120231 its reverse (132021222), we obtain a palindrome (90099009).

The spelling of 222120231 in words is "two hundred twenty-two million, one hundred twenty thousand, two hundred thirty-one".