222242477 has 4 divisors (see below), whose sum is σ = 222272316. Its totient is φ = 222212640.

The previous prime is 222242467. The next prime is 222242593. The reversal of 222242477 is 774242222.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 105904681 + 116337796 = 10291^2 + 10786^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-222242477 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222242437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6593 + ... + 22089.

It is an arithmetic number, because the mean of its divisors is an integer number (55568079).

Almost surely, 2^222242477 is an apocalyptic number.

It is an amenable number.

222242477 is a deficient number, since it is larger than the sum of its proper divisors (29839).

222242477 is a wasteful number, since it uses less digits than its factorization.

222242477 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29838.

The product of its digits is 25088, while the sum is 32.

The square root of 222242477 is about 14907.7992004186. The cubic root of 222242477 is about 605.7252664052.

Adding to 222242477 its reverse (774242222), we get a palindrome (996484699).

The spelling of 222242477 in words is "two hundred twenty-two million, two hundred forty-two thousand, four hundred seventy-seven".