20333043222121 has 4 divisors (see below), whose sum is σ = 23237763682432. Its totient is φ = 17428322761812.

The previous prime is 20333043222097. The next prime is 20333043222127. The reversal of 20333043222121 is 12122234033302.

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 20333043222121 - 2¹⁹ = 20333042697833 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20333043222121.

It is not an unprimeable number, because it can be changed into a prime (20333043222127) 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 3 ways as a sum of consecutive naturals, for example, 1452360230145 + ... + 1452360230158.

It is an arithmetic number, because the mean of its divisors is an integer number (5809440920608).

Almost surely, 2^{20333043222121} is an apocalyptic number.

It is an amenable number.

20333043222121 is a deficient number, since it is larger than the sum of its proper divisors (2904720460311).

20333043222121 is an equidigital number, since it uses as much as digits as its factorization.

20333043222121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2904720460310.

The product of its (nonzero) digits is 10368, while the sum is 28.

Adding to 20333043222121 its reverse (12122234033302), we get a palindrome (32455277255423).

The spelling of 20333043222121 in words is "twenty trillion, three hundred thirty-three billion, forty-three million, two hundred twenty-two thousand, one hundred twenty-one".