20133121213 has 8 divisors (see below), whose sum is σ = 21067271936. Its totient is φ = 19216764000.

The previous prime is 20133121181. The next prime is 20133121241. The reversal of 20133121213 is 31212133102.

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 20133121213 - 2⁵ = 20133121181 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20133121243) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4446063 + ... + 4450588.

It is an arithmetic number, because the mean of its divisors is an integer number (2633408992).

Almost surely, 2^20133121213 is an apocalyptic number.

It is an amenable number.

20133121213 is a deficient number, since it is larger than the sum of its proper divisors (934150723).

20133121213 is an equidigital number, since it uses as much as digits as its factorization.

20133121213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8896755.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 20133121213 its reverse (31212133102), we get a palindrome (51345254315).

The spelling of 20133121213 in words is "twenty billion, one hundred thirty-three million, one hundred twenty-one thousand, two hundred thirteen".