1233213012 has 120 divisors (see below), whose sum is σ = 3417136800. Its totient is φ = 386731584.

The previous prime is 1233212999. The next prime is 1233213013. The reversal of 1233213012 is 2103123321.

It is a super-2 number, since 2×1233213012² = 3041628665932224288, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1233213013) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 1002814 + ... + 1004042.

It is an arithmetic number, because the mean of its divisors is an integer number (28476140).

Almost surely, 2^1233213012 is an apocalyptic number.

1233213012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1233213012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1708568400).

1233213012 is an abundant number, since it is smaller than the sum of its proper divisors (2183923788).

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

1233213012 is a wasteful number, since it uses less digits than its factorization.

1233213012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1427 (or 1416 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 1233213012 is about 35117.1327417259. The cubic root of 1233213012 is about 1072.3733998934.

Adding to 1233213012 its reverse (2103123321), we get a palindrome (3336336333).

The spelling of 1233213012 in words is "one billion, two hundred thirty-three million, two hundred thirteen thousand, twelve".