1213313233212 has 24 divisors (see below), whose sum is σ = 3145626901200. Its totient is φ = 404437744368.

The previous prime is 1213313233211. The next prime is 1213313233229. The reversal of 1213313233212 is 2123323133121.

1213313233212 is a `hidden beast` number, since 1 + 2 + 1 + 3 + 313 + 2 + 332 + 12 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1213313233211) 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, 5617190787 + ... + 5617191002.

It is an arithmetic number, because the mean of its divisors is an integer number (131067787550).

Almost surely, 2^{1213313233212} is an apocalyptic number.

1213313233212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1213313233212 is an abundant number, since it is smaller than the sum of its proper divisors (1932313667988).

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

1213313233212 is a wasteful number, since it uses less digits than its factorization.

1213313233212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11234381802 (or 11234381794 counting only the distinct ones).

The product of its digits is 3888, while the sum is 27.

Adding to 1213313233212 its reverse (2123323133121), we get a palindrome (3336636366333).

The spelling of 1213313233212 in words is "one trillion, two hundred thirteen billion, three hundred thirteen million, two hundred thirty-three thousand, two hundred twelve".