222405122 has 4 divisors (see below), whose sum is σ = 333607686. Its totient is φ = 111202560.

The previous prime is 222405121. The next prime is 222405137. The reversal of 222405122 is 221504222.

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

It can be written as a sum of positive squares in only one way, i.e., 151019521 + 71385601 = 12289^2 + 8449^2 .

It is a junction number, because it is equal to n+sod(n) for n = 222405094 and 222405103.

It is not an unprimeable number, because it can be changed into a prime (222405121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55601279 + ... + 55601282.

Almost surely, 2^222405122 is an apocalyptic number.

222405122 is a deficient number, since it is larger than the sum of its proper divisors (111202564).

222405122 is a wasteful number, since it uses less digits than its factorization.

222405122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111202563.

The product of its (nonzero) digits is 640, while the sum is 20.

The square root of 222405122 is about 14913.2532332821. The cubic root of 222405122 is about 605.8729941843.

Adding to 222405122 its reverse (221504222), we get a palindrome (443909344).

The spelling of 222405122 in words is "two hundred twenty-two million, four hundred five thousand, one hundred twenty-two".