20133220121 has 8 divisors (see below), whose sum is σ = 23399384640. Its totient is φ = 16964553168.

The previous prime is 20133220099. The next prime is 20133220123. The reversal of 20133220121 is 12102233102.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20133220121 - 2¹⁴ = 20133203737 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 20133220121.

It is not an unprimeable number, because it can be changed into a prime (20133220123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24373946 + ... + 24374771.

It is an arithmetic number, because the mean of its divisors is an integer number (2924923080).

Almost surely, 2^20133220121 is an apocalyptic number.

It is an amenable number.

20133220121 is a deficient number, since it is larger than the sum of its proper divisors (3266164519).

20133220121 is an equidigital number, since it uses as much as digits as its factorization.

20133220121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48748783.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 20133220121 its reverse (12102233102), we get a palindrome (32235453223).

The spelling of 20133220121 in words is "twenty billion, one hundred thirty-three million, two hundred twenty thousand, one hundred twenty-one".