20123221133333 has 4 divisors (see below), whose sum is σ = 20998143791328. Its totient is φ = 19248298475340.

The previous prime is 20123221133299. The next prime is 20123221133339. The reversal of 20123221133333 is 33333112232102.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 20123221133333 - 2²⁶ = 20123154024469 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20123221133296 and 20123221133305.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20123221133339) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 437461328963 + ... + 437461329008.

It is an arithmetic number, because the mean of its divisors is an integer number (5249535947832).

Almost surely, 2^{20123221133333} is an apocalyptic number.

20123221133333 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

20123221133333 is a deficient number, since it is larger than the sum of its proper divisors (874922657995).

20123221133333 is an equidigital number, since it uses as much as digits as its factorization.

20123221133333 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 874922657994.

The product of its (nonzero) digits is 11664, while the sum is 29.

Adding to 20123221133333 its reverse (33333112232102), we get a palindrome (53456333365435).

The spelling of 20123221133333 in words is "twenty trillion, one hundred twenty-three billion, two hundred twenty-one million, one hundred thirty-three thousand, three hundred thirty-three".