222120523 has 4 divisors (see below), whose sum is σ = 222226888. Its totient is φ = 222014160.

The previous prime is 222120517. The next prime is 222120557. The reversal of 222120523 is 325021222.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-222120523 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 222120523.

It is not an unprimeable number, because it can be changed into a prime (222120023) 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, 49986 + ... + 54247.

It is an arithmetic number, because the mean of its divisors is an integer number (55556722).

Almost surely, 2^222120523 is an apocalyptic number.

222120523 is a deficient number, since it is larger than the sum of its proper divisors (106365).

222120523 is a wasteful number, since it uses less digits than its factorization.

222120523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106364.

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 222120523 is about 14903.7083640281. The cubic root of 222120523 is about 605.6144503028.

Adding to 222120523 its reverse (325021222), we get a palindrome (547141745).

The spelling of 222120523 in words is "two hundred twenty-two million, one hundred twenty thousand, five hundred twenty-three".