20213122333 has 4 divisors (see below), whose sum is σ = 20262543580. Its totient is φ = 20163701088.

The previous prime is 20213122327. The next prime is 20213122337. The reversal of 20213122333 is 33322131202.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 9104594724 + 11108527609 = 95418^2 + 105397^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20213122333 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 (20213122337) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24710010 + ... + 24710827.

It is an arithmetic number, because the mean of its divisors is an integer number (5065635895).

Almost surely, 2^20213122333 is an apocalyptic number.

It is an amenable number.

20213122333 is a deficient number, since it is larger than the sum of its proper divisors (49421247).

20213122333 is an equidigital number, since it uses as much as digits as its factorization.

20213122333 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49421246.

The product of its (nonzero) digits is 1296, while the sum is 22.

Adding to 20213122333 its reverse (33322131202), we get a palindrome (53535253535).

The spelling of 20213122333 in words is "twenty billion, two hundred thirteen million, one hundred twenty-two thousand, three hundred thirty-three".