1122121222 has 8 divisors (see below), whose sum is σ = 1683358776. Its totient is φ = 561001632.

The previous prime is 1122121213. The next prime is 1122121223. The reversal of 1122121222 is 2221212211.

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 = 1122121196 and 1122121205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1122121223) 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, 318 + ... + 47374.

It is an arithmetic number, because the mean of its divisors is an integer number (210419847).

Almost surely, 2^1122121222 is an apocalyptic number.

1122121222 is a deficient number, since it is larger than the sum of its proper divisors (561237554).

1122121222 is a wasteful number, since it uses less digits than its factorization.

1122121222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58982.

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

The square root of 1122121222 is about 33498.0778851563. The cubic root of 1122121222 is about 1039.1540278966.

Adding to 1122121222 its reverse (2221212211), we get a palindrome (3343333433).

The spelling of 1122121222 in words is "one billion, one hundred twenty-two million, one hundred twenty-one thousand, two hundred twenty-two".