1222552222 has 8 divisors (see below), whose sum is σ = 1834012656. Its totient is φ = 611214672.

The previous prime is 1222552211. The next prime is 1222552241. The reversal of 1222552222 is 2222552221.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

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, 498 + ... + 49450.

It is an arithmetic number, because the mean of its divisors is an integer number (229251582).

Almost surely, 2^1222552222 is an apocalyptic number.

1222552222 is a deficient number, since it is larger than the sum of its proper divisors (611460434).

1222552222 is a wasteful number, since it uses less digits than its factorization.

1222552222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61442.

The product of its digits is 3200, while the sum is 25.

The square root of 1222552222 is about 34965.0142571114. The cubic root of 1222552222 is about 1069.2743273047.

Subtracting 1222552222 from its reverse (2222552221), we obtain a palindrome (999999999).

The spelling of 1222552222 in words is "one billion, two hundred twenty-two million, five hundred fifty-two thousand, two hundred twenty-two".