20123133213213 has 96 divisors (see below), whose sum is σ = 31262602914816. Its totient is φ = 12929126335488.

The previous prime is 20123133213193. The next prime is 20123133213223. The reversal of 20123133213213 is 31231233132102.

20123133213213 is a `hidden beast` number, since 2 + 0 + 1 + 2 + 3 + 1 + 332 + 1 + 321 + 3 = 666.

It is not a de Polignac number, because 20123133213213 - 2⁸ = 20123133212957 is a prime.

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 (20123133213223) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 139113981 + ... + 139258557.

It is an arithmetic number, because the mean of its divisors is an integer number (325652113696).

Almost surely, 2^{20123133213213} is an apocalyptic number.

It is an amenable number.

20123133213213 is a deficient number, since it is larger than the sum of its proper divisors (11139469701603).

20123133213213 is a wasteful number, since it uses less digits than its factorization.

20123133213213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144845 (or 144833 counting only the distinct ones).

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

Adding to 20123133213213 its reverse (31231233132102), we get a palindrome (51354366345315).

The spelling of 20123133213213 in words is "twenty trillion, one hundred twenty-three billion, one hundred thirty-three million, two hundred thirteen thousand, two hundred thirteen".