1223211112 has 8 divisors (see below), whose sum is σ = 2293520850. Its totient is φ = 611605552.

The previous prime is 1223211079. The next prime is 1223211131. The reversal of 1223211112 is 2111123221.

It can be written as a sum of positive squares in only one way, i.e., 1148803236 + 74407876 = 33894^2 + 8626^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 76450687 + ... + 76450702.

Almost surely, 2^1223211112 is an apocalyptic number.

It is an amenable number.

1223211112 is a deficient number, since it is larger than the sum of its proper divisors (1070309738).

1223211112 is a wasteful number, since it uses less digits than its factorization.

1223211112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 152901395 (or 152901391 counting only the distinct ones).

The product of its digits is 48, while the sum is 16.

The square root of 1223211112 is about 34974.4351205277. The cubic root of 1223211112 is about 1069.4663866207.

Adding to 1223211112 its reverse (2111123221), we get a palindrome (3334334333).

The spelling of 1223211112 in words is "one billion, two hundred twenty-three million, two hundred eleven thousand, one hundred twelve".