126221222 has 8 divisors (see below), whose sum is σ = 189669816. Its totient is φ = 62997952.

The previous prime is 126221219. The next prime is 126221257. The reversal of 126221222 is 222122621.

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

It is a junction number, because it is equal to n+sod(n) for n = 126221194 and 126221203.

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, 54923 + ... + 57174.

It is an arithmetic number, because the mean of its divisors is an integer number (23708727).

Almost surely, 2^126221222 is an apocalyptic number.

126221222 is a deficient number, since it is larger than the sum of its proper divisors (63448594).

126221222 is a wasteful number, since it uses less digits than its factorization.

126221222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112662.

The product of its digits is 384, while the sum is 20.

The square root of 126221222 is about 11234.8218499449. The cubic root of 126221222 is about 501.6230218993.

Adding to 126221222 its reverse (222122621), we get a palindrome (348343843).

The spelling of 126221222 in words is "one hundred twenty-six million, two hundred twenty-one thousand, two hundred twenty-two".