1211122204 has 24 divisors (see below), whose sum is σ = 2144757888. Its totient is φ = 598360560.

The previous prime is 1211122181. The next prime is 1211122207. The reversal of 1211122204 is 4022211121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1211122207) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 199299 + ... + 205285.

It is an arithmetic number, because the mean of its divisors is an integer number (89364912).

Almost surely, 2^1211122204 is an apocalyptic number.

It is an amenable number.

1211122204 is a deficient number, since it is larger than the sum of its proper divisors (933635684).

1211122204 is a wasteful number, since it uses less digits than its factorization.

1211122204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6585 (or 6583 counting only the distinct ones).

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

The square root of 1211122204 is about 34801.1810719119. The cubic root of 1211122204 is about 1065.9315628266.

Adding to 1211122204 its reverse (4022211121), we get a palindrome (5233333325).

The spelling of 1211122204 in words is "one billion, two hundred eleven million, one hundred twenty-two thousand, two hundred four".