20113233313212 has 192 divisors, whose sum is σ = 56785590400000. Its totient is φ = 6119598594816.

The previous prime is 20113233313207. The next prime is 20113233313219. The reversal of 20113233313212 is 21231333231102.

20113233313212 is a `hidden beast` number, since 2 + 0 + 1 + 1 + 3 + 2 + 3 + 331 + 321 + 2 = 666.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20113233313219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 76233273 + ... + 76496655.

Almost surely, 2^{20113233313212} 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 20113233313212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28392795200000).

20113233313212 is an abundant number, since it is smaller than the sum of its proper divisors (36672357086788).

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

20113233313212 is a wasteful number, since it uses less digits than its factorization.

20113233313212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 264017 (or 264009 counting only the distinct ones).

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

Adding to 20113233313212 its reverse (21231333231102), we get a palindrome (41344566544314).

The spelling of 20113233313212 in words is "twenty trillion, one hundred thirteen billion, two hundred thirty-three million, three hundred thirteen thousand, two hundred twelve".