1211123222 has 24 divisors (see below), whose sum is σ = 1854662544. Its totient is φ = 593149392.

The previous prime is 1211123209. The next prime is 1211123233. The reversal of 1211123222 is 2223211121.

It is a super-2 number, since 2×1211123222² = 2933638917735322568, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1211123222.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2486663 + ... + 2487149.

It is an arithmetic number, because the mean of its divisors is an integer number (77277606).

Almost surely, 2^1211123222 is an apocalyptic number.

1211123222 is a deficient number, since it is larger than the sum of its proper divisors (643539322).

1211123222 is an equidigital number, since it uses as much as digits as its factorization.

1211123222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 900 (or 833 counting only the distinct ones).

The product of its digits is 96, while the sum is 17.

The square root of 1211123222 is about 34801.1956978492. The cubic root of 1211123222 is about 1065.9318614802.

Adding to 1211123222 its reverse (2223211121), we get a palindrome (3434334343).

The spelling of 1211123222 in words is "one billion, two hundred eleven million, one hundred twenty-three thousand, two hundred twenty-two".