1212112222 has 4 divisors (see below), whose sum is σ = 1818168336. Its totient is φ = 606056110.

The previous prime is 1212112207. The next prime is 1212112229. The reversal of 1212112222 is 2222112121.

It is a happy number.

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

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 1212112196 and 1212112205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1212112229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 303028054 + ... + 303028057.

It is an arithmetic number, because the mean of its divisors is an integer number (454542084).

Almost surely, 2^1212112222 is an apocalyptic number.

1212112222 is a deficient number, since it is larger than the sum of its proper divisors (606056114).

1212112222 is an equidigital number, since it uses as much as digits as its factorization.

1212112222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 606056113.

The product of its digits is 64, while the sum is 16.

The square root of 1212112222 is about 34815.4020801139. The cubic root of 1212112222 is about 1066.2219282457.

Adding to 1212112222 its reverse (2222112121), we get a palindrome (3434224343).

The spelling of 1212112222 in words is "one billion, two hundred twelve million, one hundred twelve thousand, two hundred twenty-two".