1121221222 has 8 divisors (see below), whose sum is σ = 1834725672. Its totient is φ = 509646000.

The previous prime is 1121221183. The next prime is 1121221223. The reversal of 1121221222 is 2221221211.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct 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 = 1121221196 and 1121221205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1121221223) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25482279 + ... + 25482322.

It is an arithmetic number, because the mean of its divisors is an integer number (229340709).

Almost surely, 2^1121221222 is an apocalyptic number.

1121221222 is a deficient number, since it is larger than the sum of its proper divisors (713504450).

1121221222 is a wasteful number, since it uses less digits than its factorization.

1121221222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50964614.

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

The square root of 1121221222 is about 33484.6415838665. The cubic root of 1121221222 is about 1038.8761349337.

Adding to 1121221222 its reverse (2221221211), we get a palindrome (3342442433).

The spelling of 1121221222 in words is "one billion, one hundred twenty-one million, two hundred twenty-one thousand, two hundred twenty-two".