222081122 has 4 divisors (see below), whose sum is σ = 333121686. Its totient is φ = 111040560.

The previous prime is 222081121. The next prime is 222081131. The reversal of 222081122 is 221180222.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 221180222 = 2 ⋅110590111.

It can be written as a sum of positive squares in only one way, i.e., 153041641 + 69039481 = 12371^2 + 8309^2 .

It is a junction number, because it is equal to n+sod(n) for n = 222081094 and 222081103.

It is not an unprimeable number, because it can be changed into a prime (222081121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55520279 + ... + 55520282.

Almost surely, 2^222081122 is an apocalyptic number.

222081122 is a deficient number, since it is larger than the sum of its proper divisors (111040564).

222081122 is a wasteful number, since it uses less digits than its factorization.

222081122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111040563.

The product of its (nonzero) digits is 256, while the sum is 20.

The square root of 222081122 is about 14902.3864531826. The cubic root of 222081122 is about 605.5786390749.

The spelling of 222081122 in words is "two hundred twenty-two million, eighty-one thousand, one hundred twenty-two".