1233211312 has 40 divisors (see below), whose sum is σ = 2477229840. Its totient is φ = 594021120.

The previous prime is 1233211307. The next prime is 1233211351. The reversal of 1233211312 is 2131123321.

It is a super-2 number, since 2×1233211312² = 3041620280089522688, 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 1233211312.

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 in 7 ways as a sum of consecutive naturals, for example, 225118 + ... + 230530.

It is an arithmetic number, because the mean of its divisors is an integer number (61930746).

Almost surely, 2^1233211312 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1233211312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1238614920).

1233211312 is an abundant number, since it is smaller than the sum of its proper divisors (1244018528).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1233211312 is a wasteful number, since it uses less digits than its factorization.

1233211312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5941 (or 5935 counting only the distinct ones).

The product of its digits is 216, while the sum is 19.

The square root of 1233211312 is about 35117.1085370080. The cubic root of 1233211312 is about 1072.3729071330.

Adding to 1233211312 its reverse (2131123321), we get a palindrome (3364334633).

The spelling of 1233211312 in words is "one billion, two hundred thirty-three million, two hundred eleven thousand, three hundred twelve".